Mounting system

This design relates to a mounting system and particularly to a system which permits the quick mounting and dismounting of the items to the bearing surface or element.

BACKGROUND

There are many items in different applications, whose usage would be facilitated if there would be an ability to quickly and easily mount and dismount them.

In marine situations, for example, boaters and scuba divers are aware of the benefits of being able to mount and dismount items quickly and conveniently. Some items include anchors, electronic gear, fire extinguishers, dive ladders, scuba cylinders and others.

In other environments as well, the benefits of a quick, easy and secure mounting assembly are apparent. So, for example, the need for a quick, but secure remounting of fire extinguishers under such conditions as earthquakes, auto/truck accidents, difficult fire scenarios, or other extreme conditions, is of obvious benefit.

In the marine area, it is important for boaters to be able to remove vulnerable, expensive electronic gear whenever they leave their vessel at the end of the day or for an extended time. The boat's anchor preferably should be kept off the vessel's fragile decks. If it could be detachably secured, perhaps to the boat's railing, this concern can be obviated. Of course, these efforts should present minimum inconvenience.

The impetus for the present invention came from the inventor's interest in scuba diving. Scuba divers realize the need for a quick, relatively easy and secure connect/disconnect system. They are faced with mounting or detaching their buoyancy compensator (B.C.) to their main oxygen tank; and their, smaller back-up air tank(s) (pony bottle) to the primary tank. Many times these chores are performed on board as the vessel rolls, or along a rocky coast where the footing is a challenge.

A further consideration beyond the practicality of such a system is its cost. For example, divers, traditionally, will have at least two tanks of their own. Some will have several, and, typically with different stress demands. For example the coupling between the B.C. and the main tank will differ in size and load bearing capacity from the connection between the main tank and the spare or pony bottle. As a practical matter, divers will own several tanks. So, too, there are different diameter spare tanks on the market.

Preferably, a mounting system should accommodate all of these variables. A simple, secure cost effective way to accomplish this connect/disconnect function is desired. Various approaches have been identified in the prior art.

For example, in U.S. Pat. No. 4,949,889, a design is revealed which relies on a nylon band to secure the spare tank. This band will stretch when heated or moistened allowing for some play and possibly loss of the spare tank. Newer buoyancy compensators use two nylon bands to secure the pony bottle to the main tank, in case one should loosen. This device further places the spare tank in an uncomfortable position if placed on one of the two bands of a newer buoyancy compensator. The tightening of these bands is crucial but difficult. With one unit hanging from one of the bands it is extremely difficult to complete the process. Furthermore, removal of the spare tank underwater would be very time consuming and difficult.

U.S. Pat. No. 5,906,302 reveals a design that is very difficult and time consuming to attach. The diver must separate the tank band from its buckle, then feed it through this device and then back to and through the buckle. This must be done while supporting a tank, anywhere in the range of 8 to 15 lbs (3.5 70 7.0 kilo), on the deck of a pitching boat. Also if the diver decides to change the size of the spare tank, a differently sized device would have to be employed. Further, the removal of the spare tank underwater would be very time consuming and difficult.

U.S. Pat. No. 5,887,836 reveals a device that uses two detent pins. The disclosed detent pins require jiggling and extreme pressure to push in or remove, especially while wearing a thick, diver's glove. These pins are secured from dropping by steel cables. These cables form loops that can easily be snagged by fishing line, hooks or wreckage. If this should happen these detent pins could be pulled free, or at least create a panic situation. These cables often fray, allowing a strand to penetrate the crucial air bladder located in the buoyancy compensator. Again, if the diver should want to change the diameter of the tank, an additional, differently sized unit would have to be purchased. Still further, the use of a nylon strap (Col. 3, 1.56) again is problematic due to heat and moisture. The inventor's experience with this device leads him to conclude that the alignment or attachment of this device requires some practice, especially on the deck of a boat out at sea. This item is very costly due to its construction process.

The device described in U.S. Pat. No. 6,367,753 requires a great amount of strength to manipulate. The slotted opening created for the stainless steel banding appears to allow these bands much space to move. Judging from its description it appears it uses a flat surface to press against the round outside diameter of the spare air tank. Even though this device was designed to connect two cylinders, there are no rounded surfaces at all. This will create excessive wear on the aluminum tanks that are filled with 3000 psi (210 bar) of air. There are many sharp edges and protrusions that can be easily snagged, or puncture dive gear.

The design of U.S. Pat. No. 5,390,886 uses two of its described pieces to secure, a 30 cu ft (0.85 cu meters) tank, the most common size. When using these two pieces the diver has a problem keeping them aligned so the tank can be installed. They are usually knocked from alignment when being hit or bumped in the car, at the dive shop or on the boat. This means the hose clamps have to be loosened, realigned and tightened. Often this realignment will be performed out at sea. Another problem is the use of two detent pins. They are hard to place and remove. They are attached by a steel cable, so that when the pin is pushed into place, the cable forms a loop that is easily snagged by fishing line, hooks or wreckage. Not only will this panic a diver, the detent pin may be pulled free, allowing the spare tank to separate. Once again, these cables are known to fray, allowing its strands to puncture the air bladder in the buoyancy compensator.

The device described in design patent, DES. 342,666 uses a pin that may easily be lost. It is designed to connect two round cylinders, yet there are no rounded contact surfaces. This will create uneven wear on a potentially explosive tank. As with several of the designs discussed, this design would appear to be very costly to create. This inhibits the diver from buying multiple sets of the mounting assembly. This reduces the tank transfer time and reduces the pleasure and/or productivity of a diving experience.

It is therefore a principal object of the present invention to provide a two piece mounting system, wherein one piece slides quickly and easily into another and wherein an integral locking mechanism between the two pieces is automatically engaged.

It is a further object of the invention to provide a two piece mounting system wherein each piece is fabricated from extruded metal thus lessening their cost and availability in multiple sets.

It is a further object of the present invention to provide a locking mechanism for the two piece mounting system which is easily disengaged from the locked position.

It is yet another object to provide a locking mechanism which does not require cables to secure it as part of the mounting system thus avoiding snagging and interference problems.

It is still another object of the invention to provide a two piece mounting system wherein the sliding movement of the first piece into the second is purposely stopped at a support surface of the second near the point of locking mechanism engagement and disengagement, so as to facilitate the attachment and detachment of the item to be mounted.

It is but another object of this invention to provide a two piece mounting system, wherein each piece includes arcuate contact surfaces for engaging, simultaneously cylindrical members, for example, the main tank and pony bottle of a scuba diver's equipment.

It is still another object of this invention to provide a two piece mounting system which is configured to minimize drag, for example, as part of a scuba diver's equipment, while used in the water; and which is further shaped to minimize interference contacts with the surrounding environment.

It is still yet another object of this invention to provide an interface mounting arrangement between the two piece mounting system and the equipment secured by the mounting system, which is secure under all possible orientations of the system-equipment, as employed.

SUMMARY

These and other objects are obtained with the mounting system of the present invention.

As noted above there are many situations where it is important if not vital to have a quick connect/disconnect system for various items. Especially in a marine environment, and even more particularly for scuba divers, reliable systems of this type are essential. It occurred that having these systems in place, attached to the items to be mounted together, would be an advantage. Further, if an operator's simple arm movements effectuate a secure, reliable connection and disconnection the result would be an important improvement.

To this end a two piece mounting system incorporating these ideas is devised. For mounting a main air tank used in scuba diving to a pony air tank, for example, two similar pieces would be employed. Each would have a generally rectangularly shaped central body portion that is preferably fabricated in extruded aluminum, but can, of course, be made of other metals such as steel, and a variety of plastic materials. Each of the two pieces can have a partially arcuate rear surface matching the radii of tanks for attachment. Connection to the tanks can be made in any convenient manner, in this case stainless steel band-clamps being preferred. The first piece can be connected to the pony air tank, and the second piece to the main air tank. The front of the first piece has an attached generally cylindrical protrusion extending from the top of the piece a spaced distance down one side of the central body, with a matching cylindrical cavity being formed into the other side of the central body. A similar matching and cooperating structure is incorporated into the front of the second piece.

To provide the fast and automatic connection and easy disconnection required by the present invention, the cavity in the first piece is equipped with a spring loaded, indexing plunger mechanism which will be fully illustrated and described below. For the second piece the top of the cylinder has a beveled edge, with an indent in the cylinder positioned just below this edge. The base of the cylinder cavity has a plug of a specific dimension. To securely mount the pony air tank to the main air tank, an operator simply raises the first piece over the second piece and lowers the matching cylinder-cavities together. The precise dimensions of the cylinder on the first piece, together with the plug in the matching cavity in the second piece insure that the spring biased plunger portion in the plunger mechanism, which has been urged inwards by the beveled top surface of the cylinder in the second piece, is in axial alignment with, and in fact is positioned into, the indent adjacent the top of the second piece cylinder. The two tanks are now secured together reliably for any future orientation. For quick release, the handle on the plunger mechanism is simply pulled out against the biasing spring permitting the two pieces to be separated.

As previously discussed and to be more fully described below, the basic mounting system can be employed for a wider variety of applications. The rear surface of one or both pieces can be fabricated to accommodate flat or variously curved surfaces. The overall dimensions of either piece can obviously be selected for the given application.

BRIEF DESCRIPTION OF THE DRAWINGS

<figref idref="DRAWINGS">FIG. 1</figref> is a side elevation view of the invention as used to secure oxygen tanks to a buoyancy compensator used in scuba diving.

<figref idref="DRAWINGS">FIG. 2</figref> is a top plan view of <figref idref="DRAWINGS">FIG. 1</figref>, with the so-called pony-tank rotated 90°, in the direction of the arrow, from its position in <figref idref="DRAWINGS">FIG. 1</figref>.

<figref idref="DRAWINGS">FIG. 3</figref> is a perspective view of a first piece of a first adaptation of the present invention.

<figref idref="DRAWINGS">FIG. 4</figref> is a perspective view of a second piece of the first adaptation of the present invention.

<figref idref="DRAWINGS">FIG. 5</figref> is a perspective view of a first piece of a second adaptation of the present invention.

<figref idref="DRAWINGS">FIG. 6</figref> is a perspective view of a second piece of a second adaptation of the present invention.

<figref idref="DRAWINGS">FIG. 7</figref> is a perspective view of the first piece of the second adaptation of the invention as depicted in <figref idref="DRAWINGS">FIG. 5</figref>, shown mounted to a buoyancy compensator for a scuba diving application of the present invention.

<figref idref="DRAWINGS">FIG. 8</figref> is a perspective view shown to understand the relationship between the first and second pieces of the first adaptation for the present invention, prior to their connection.

<figref idref="DRAWINGS">FIG. 9A</figref> is a perspective view of a second piece of yet another adaptation of the present invention.

<figref idref="DRAWINGS">FIG. 9B</figref> is a top plan view of the second piece depicted in <figref idref="DRAWINGS">FIG. 9A</figref>.

<figref idref="DRAWINGS">FIG. 10A</figref> is a side elevation view of another application of the present invention.

<figref idref="DRAWINGS">FIG. 10B</figref> is a top plan view of the application depicted in <figref idref="DRAWINGS">FIG. 10A</figref> taken along lines <b>10</b>B-<b>10</b>B in <figref idref="DRAWINGS">FIG. 10A</figref>.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Refer now to the drawings. The use of the same reference numerals in different figures signify one and the same item. Various preferred embodiments of the mounting system of the present invention are shown. In <figref idref="DRAWINGS">FIG. 1</figref>, in one application of the invention, it is seen as applied to securing a main oxygen tank <b>10</b> to a smaller reserve tank, or pony tank, <b>12</b> through a first adaptation of the invention <b>14</b>; and the mounting of that combination to a buoyancy compensator (BC) <b>16</b> attached to a scuba diver's vest <b>17</b>, using a second adaptation of the invention <b>18</b>.

The first adaptation <b>14</b> includes a first and second piece, <b>20</b> and <b>22</b>. The second adaptation <b>18</b> includes a first and second piece <b>24</b> and <b>26</b>. The two adaptations differ in length and other minor aspects as will be apparent from the following discussion. Adaptation <b>18</b> is longer due to the fact that it must balance the weight of the tank combination along the length of the mounting surface associated with the BC. From <figref idref="DRAWINGS">FIG. 2</figref>, it is seen that the interface boundaries <b>28</b> and <b>30</b> for each of the two adaptations are substantially identical in profile. In this application, the mounting surfaces <b>32</b> and <b>33</b> of piece <b>24</b> are flat so as to complement the mounting surface of the BC.

To secure the cylindrical tanks <b>10</b> and <b>12</b> to the first adaptation <b>14</b>, adjustable band-clamps <b>34</b> and <b>36</b>, and <b>38</b> and <b>40</b> are used. These typically are stainless steel band-clamps identical to the radiator hose clamps purchased at auto parts stores. The relationship between each of these band-clamps and the pieces <b>20</b> and <b>22</b>, will be discussed hereinafter. A further set of band-clamps <b>42</b> and <b>44</b> are used to connect the combined tanks to the second piece <b>26</b> of the second adaptation <b>18</b>.

<figref idref="DRAWINGS">FIG. 3</figref> depicts the first piece <b>20</b> shown secured to an air tank <b>12</b> by band-clamps <b>34</b> and <b>36</b>. The piece <b>20</b>, as is true with the other pieces that form the adaptations, <b>14</b> and <b>18</b>, as well as the adaptations for the other embodiments, all of which will be described hereinafter, is fabricated from a material suitable for its environment of use as well as having the necessary strength requirements. So, for example, in its utilization in a scuba diver environment, the piece is fabricated from aluminum or plastic so as to resist the corrosive effects of water, keeping in mind as well, the need to provide a piece that is relatively light weight and which will only minimally contribute to drag while in use in the water.

Individual pieces, <b>20</b> and <b>22</b>, are initially cut from an extruded aluminum piece which has the basic shape necessary to implement the interconnect feature of the present invention. The individual pieces are cut at appropriate lengths to accommodate the application. So for example, for the scuba diver application, for the pieces depicted in <figref idref="DRAWINGS">FIG. 3</figref> and <figref idref="DRAWINGS">FIG. 4</figref>, which, together, implement the first adaptation <b>14</b>, the longitudinal length would be approximately 4″ (10 cm). The individual, basic pieces are cut to the desired length from the extended, extruded piece. They are then subsequently machined to provide the surfaces and features necessary to fully implement the invention and which may be unique to a specific application. This approach reduces production costs significantly.

In <figref idref="DRAWINGS">FIG. 3</figref>, the cut first piece, as extruded, is seen to include a first central body portion <b>46</b>. Formed at one lateral end is a cavity <b>48</b> which is interiorly disposed in the first central body portion. This cavity is partially circular. The cavity <b>48</b> is interconnected along its longitudinal length to and through the surface <b>50</b> of the central body portion <b>46</b>, via a rectangular cutout <b>52</b>. Formed at the other lateral end by the extrusion is a first, partially circular protrusion <b>54</b> extending outward from the first central body portion <b>46</b> and connected thereto by extension member <b>56</b>. The contours of <b>54</b> and <b>56</b>, and their respective dimensions and dimensional relationship to the first central body portion, complement the contours of cavity <b>48</b> and cutout <b>52</b>, and their dimensions, and dimensional relationships to the first central body portion, for purposes which will be apparent hereinafter.

Extending longitudinally, axially, in both directions from the first central body portion <b>46</b>, are band-clamp retention portions <b>58</b> and <b>60</b>. Each of the associated facing surfaces are machined to form a retaining groove which is dimensioned to accommodate the longitudinal width and thickness of the securing band portions of the band-clamp, such as <b>34</b> and <b>36</b>. This prevents the respective band from slipping off from the piece <b>20</b> secured to a tank <b>12</b>, when in use in difficult environments.

Arcuate segments <b>62</b> and <b>64</b> are also formed in the basic extruded piece. These segments are designed into the extruding mold so as to eliminate unnecessary material from the piece-a benefit in scuba diving applications in that it reduces the weight of the pieces <b>20</b> and <b>22</b>, and helps to minimize drag in the water.

The rear surface <b>65</b> of the piece <b>20</b> is formed having partially arcuate surfaces of predetermined radii, if the piece is to be secured to a cylindrical object such as an air tank. So for example, surface portion <b>66</b> of rear surface <b>65</b> as formed extends the entire longitudinal length and has a first radius which complements the radius of the outer surface of the smaller cylindrical air tank, <b>12</b>. The piece <b>20</b> is formed such that surface portions <b>67</b> and <b>68</b> at the lateral edges, <b>69</b> and <b>70</b>, have the same radius, which complements the radius of the outer surface of the larger cylindrical tank, <b>10</b>. The piece <b>20</b> is shown in <figref idref="DRAWINGS">FIG. 3</figref> as secured to the smaller cylindrical tank <b>12</b> along surface portion <b>66</b>.

Piece <b>20</b> is further machined to permit the mounting of a spring-loaded, indexing plunger mechanism, <b>72</b>. This includes forming a threaded opening through the side wall <b>74</b> which forms part of the partially circular cavity <b>48</b>. The spring biased plunger portion <b>76</b> of the mechanism <b>72</b> protrudes into the cavity <b>48</b> when the mechanism <b>72</b> is firmly secured against the outer surface <b>78</b> of the piece <b>20</b>. The components that form the mechanism <b>72</b> are fabricated from materials that are compatible with the anticipated environment for a given application. So for example when used as part of the scuba diving equipment, the metallic parts of the mechanism <b>72</b> would typically be manufactured from stainless steel. One suitable plunger mechanism is supplied by J. W. Winco, Inc., located in New Berlin, Wis., under their part number GN 617-6-NI.

As best seen in <figref idref="DRAWINGS">FIG. 3</figref>, the first partially circular protrusion <b>54</b> and its associated extension <b>56</b> are machined so as to trim their length at its bottom end <b>80</b>. This is done for reasons that will be apparent from the discussion hereinafter.

<figref idref="DRAWINGS">FIG. 4</figref> depicts piece <b>22</b> which cooperates with piece <b>20</b> to form the first adaptation of the invention <b>14</b>. As noted above, the piece <b>22</b> is first cut to the desired length from the basic formed aluminum extrusion. Again, for a scuba diving tank application, this length would be approximately 4″ (10 cm). Once cut the piece <b>22</b> is machined to provide the surfaces and features necessary to implement the invention of the specific adaptation.

In <figref idref="DRAWINGS">FIG. 4</figref>, the piece <b>22</b>, as extruded, is seen to include a second central body portion <b>82</b>. Formed at one lateral end is a cavity <b>84</b> which is interiorly disposed in the second central body portion. This cavity is partially circular. The cavity <b>84</b> is interconnected along its longitudinal length to and through the surface <b>86</b> of the central body portion <b>82</b>, via a rectangular cutout <b>88</b>. Formed at the other lateral end by the extrusion is a first, partially circular protrusion <b>90</b> extending outward from the second central body portion <b>82</b> and connected thereto by extension member <b>92</b>. The contours of <b>90</b> and <b>92</b>, and their respective dimensions and dimensional relationship to the second central body portion, complement the contours of cavity <b>84</b> and cutout <b>88</b>, and their dimensions, and dimensional relationships to the second central body portion, for purposes which will be apparent hereinafter.

Extending longitudinally, axially, in both directions from the second central body portion <b>82</b>, are band-clamp retention portions <b>94</b> and <b>96</b>. Each of the associated facing surfaces are machined to form a retaining groove which is dimensioned to accommodate the longitudinal width and thickness of the securing band portions of the band-clamp, such as <b>38</b> and <b>40</b>. This prevents the respective band from slipping off from the piece <b>22</b> secured to a tank <b>10</b>, when in use in difficult environments.

Arcuate segments <b>98</b> and <b>100</b> are also formed in the basic extruded piece. These segments are designed into the extruding mold so as to eliminate unnecessary material from the piece, a benefit in scuba diving applications in that it reduces the weight of the pieces <b>20</b> and <b>22</b>, and helps to minimize drag in the water.

The rear surface <b>101</b> of the second piece <b>22</b> is formed having partially arcuate surfaces of predetermined radii if the piece is to be secured to a cylindrical surface, such as an air tank. So for example, surface portion <b>102</b> of rear surface <b>101</b> as formed, extends the entire longitudinal length and has a first radius which complements the radius of the outer surface of the smaller cylindrical air tank, <b>12</b>. The piece <b>22</b> is formed such that surface portions <b>103</b> and <b>104</b> at the lateral edges, <b>105</b> and <b>106</b>, have the same radius which complements the radius of the outer surface of the larger cylindrical tank, <b>10</b>. The piece <b>22</b> is shown in <figref idref="DRAWINGS">FIG. 4</figref> as secured to the larger cylindrical air tank <b>10</b> in contact with surface portions <b>103</b> and <b>104</b>.

Circular protrusion <b>90</b> is machined on its top end to form a beveled surface <b>108</b>. The circular protrusion <b>90</b> is further machined to provide a cylindrically shaped indent <b>110</b>, at a point in the lateral outside surface, just below the bottom of the beveled surface <b>108</b>.

Circular plug <b>112</b> is sized to tightly fit at the bottom of cavity <b>84</b>, as viewed in <figref idref="DRAWINGS">FIG. 4</figref>. It is secured therein via a stainless steel pin <b>114</b> (see <figref idref="DRAWINGS">FIG. 8</figref>) which is press-fitted through a compatible opening in the side-wall <b>116</b> and into a complementing hole (not seen) in the plug <b>112</b>.

Referring to the second adaptation of the invention, <b>18</b>, individual pieces, <b>24</b> and <b>26</b>, are initially cut from two separately formed, extruded aluminum pieces, each of which has the basic shape necessary to implement the interconnect feature of the present invention. The individual pieces are cut at appropriate lengths to accommodate the application. So for example, for the scuba diver application, for the pieces depicted in <figref idref="DRAWINGS">FIGS. 5 and 6</figref>, which, together, implement the second adaptation <b>18</b>, the longitudinal length would be approximately 12″ (30.5 cm). Once the basic pieces are cut to the 12″ (30.5 cm) length requirement, they are subsequently machined to provide the surfaces and features necessary to fully implement the invention and which may be unique to a specific application. As noted above, this approach reduces production costs significantly.

In <figref idref="DRAWINGS">FIG. 5</figref>, the cut first piece <b>24</b>, as extruded, is seen to include a first central body portion <b>118</b>. Formed at one lateral end is a cavity <b>120</b> which is interiorly disposed in the first central body portion and extends the entire longitudinal length of the piece <b>24</b>. This cavity is partially circular. The cavity <b>120</b> is interconnected along its longitudinal length to and through the surface <b>122</b> of the central body portion <b>118</b>, via a rectangular cutout <b>124</b>. Formed at the other lateral end by the extrusion is a first, partially circular protrusion <b>126</b> extending outward from the first central body portion <b>118</b> and connected thereto by extension member <b>128</b>. The contours of <b>126</b> and <b>128</b>, and their respective dimensions and dimensional relationship to the first central body portion, complement the contours of cavity <b>120</b> and cutout <b>124</b>, and their dimensions, and dimensional relationships to the first central body portion <b>118</b>, for purposes which will be apparent hereinafter.

Arcuate segments <b>130</b> and <b>132</b> are also formed in the basic extruded piece. These segments are designed into the extruding mold so as to eliminate unnecessary material from the piece, a benefit in scuba diving applications in that it reduces the weight of the piece <b>24</b>, and helps to minimize drag in the water.

The rear surface <b>134</b> of the piece <b>24</b> is formed having a partially arcuate surface of predetermined radius for when the piece is to be secured to a cylindrical surface. So for example, surface portion <b>136</b> of rear surface <b>135</b> as formed, extends the entire longitudinal length and has a first radius which complements the radius of the outer surface of a cylindrical surface such as an air tank. It also reduces weight and minimizes drag in a water environment. The piece <b>24</b> is formed such that surface portions <b>32</b> and <b>33</b> at the lateral edges, <b>138</b> and <b>140</b>, are substantially flat, which allows mounting the piece <b>24</b> to a flat surface such as the mounting plate affixed to the buoyancy compensator, <b>16</b>. (See <figref idref="DRAWINGS">FIG. 7</figref>).

Piece <b>24</b> is further machined to permit the mounting of a spring-loaded, indexing plunger mechanism, <b>142</b>. This includes forming a threaded opening through the side wall <b>144</b> which forms part of the partially circular cavity <b>120</b>. The spring biased plunger (not shown) portion of the mechanism <b>142</b> protrudes into the cavity <b>120</b> when the mechanism <b>144</b> is firmly secured against the outer surface <b>146</b> of the piece <b>24</b>. The components that form the mechanism <b>142</b> are fabricated from materials that are compatible with the anticipated environment for a given application. So for example when used as part of the scuba diving equipment, the metallic parts of the mechanism <b>142</b> would typically be manufactured from stainless steel. One suitable plunger mechanism is supplied by J. W. Winco, Inc., located in New Berlin, Wis., under their part number GN 617-6-NI.

As seen in <figref idref="DRAWINGS">FIG. 5</figref>, the first partially circular protrusion <b>126</b> and its associated extension <b>128</b> are machined so as to trim their length at their bottom <b>148</b> as viewed in <figref idref="DRAWINGS">FIG. 5</figref>. This is so for reasons that will be apparent from the discussion hereinafter.

The piece <b>24</b> is further machined to provide mounting slots <b>150</b> and <b>152</b>. These are machined completely through the first central body portion <b>118</b> to facilitate securing the piece <b>24</b> to a mounting surface.

<figref idref="DRAWINGS">FIG. 6</figref> depicts second piece <b>26</b> which cooperates with piece <b>24</b> to form the second adaptation of the invention <b>18</b>. The piece <b>26</b> is first cut to the desired length from a basic formed aluminum extrusion. The basic extruded piece from which piece <b>26</b> is cut, in fact, is identical to the one from which the pieces <b>20</b> and <b>22</b> are cut. For a scuba diving tank application, where this piece, <b>26</b>, is used to mate with piece <b>24</b>, the length would be approximately 12″ (30.5 cm). Once cut the piece <b>26</b> is machined to provide the surfaces and features necessary to implement the invention as to the specific adaptation.

In <figref idref="DRAWINGS">FIG. 6</figref>, the piece <b>26</b>, as extruded, is seen to include a second central body portion <b>154</b>. Formed at one lateral end is a cavity <b>156</b> which is interiorly disposed in the second central body portion. This cavity is partially circular. The cavity <b>156</b> is interconnected along its longitudinal length to and through the surface <b>158</b> of the central body portion <b>154</b>, via a rectangular cutout <b>160</b>. Formed at the other lateral end by the extrusion is a first, partially circular protrusion <b>162</b> extending outward from the second central body portion <b>154</b> and connected thereto by extension member <b>164</b>. The contours of <b>162</b> and <b>164</b>, and their respective dimensions and dimensional relationship to the second central body portion, complement the contours of cavity <b>156</b> and cutout <b>160</b>, and their dimensions, and dimensional relationships to the second central body portion <b>154</b>, for purposes which will be apparent hereinafter.

Extending longitudinally, axially, in both directions from the second central body portion <b>154</b>, are band-clamp retention portions <b>166</b> and <b>168</b>. Each of the associated facing surfaces are machined to form a retaining groove which is dimensioned to accommodate the longitudinal width and thickness of the securing band portions of the band-clamp, such as <b>42</b> and <b>44</b>. This prevents the respective band from slipping off from the piece <b>26</b> secured to a tank <b>10</b>, when in use in difficult environments.

Arcuate segments <b>170</b> and <b>172</b> are also formed in the basic extruded piece. These segments are designed into the extruding mold so as to eliminate unnecessary material from the piece, a benefit in scuba diving applications in that it reduces the weight of the piece <b>26</b>, and helps to minimize drag in the water.

The rear surface <b>174</b> of the piece <b>26</b> is formed having partially arcuate surfaces of predetermined radii if the piece is to be secured to a cylindrical surface, such as an air tank. So for example, surface portion <b>176</b> of rear surface <b>174</b> as formed, extends the entire longitudinal length and has a first radius which complements the radius of the outer surface of a smaller cylindrical air tank, such as tank <b>12</b>. The piece <b>26</b> is formed such that surface portions <b>178</b> and <b>180</b> at the lateral edges, <b>182</b> and <b>184</b>, have the same radius, which complements the radius of the outer surface of a larger cylindrical tank, such as tank <b>10</b>. The piece <b>26</b> is shown in <figref idref="DRAWINGS">FIG. 6</figref> as secured to the larger cylindrical air tank <b>10</b> in contact with surface portions <b>178</b> and <b>180</b>.

Circular protrusion <b>162</b> is machined on its top end to form a beveled surface <b>186</b>. The circular protrusion <b>162</b> is further machined to provide a cylindrically shaped indent <b>188</b>, at a point in the lateral outside surface, just below the end of the beveled surface <b>186</b>.

Circular plug <b>190</b> is sized to tightly fit at the bottom of cavity <b>156</b>, as viewed in <figref idref="DRAWINGS">FIG. 6</figref>. It is secured therein via a stainless steel pin (not visible) which is press-fitted through a compatible opening in the side-wall <b>192</b> and into a complementing hole (again, not seen) in the plug <b>190</b>.

Referring to <figref idref="DRAWINGS">FIG. 7</figref>, piece <b>24</b>, such as depicted in detail in <figref idref="DRAWINGS">FIG. 5</figref>, is secured to the mounting plate <b>194</b> attached to the buoyancy compensator <b>16</b> in a known way. The bolts forming part of the bolt and nut arrangements <b>196</b> and <b>198</b>, are secured to the mounting plate <b>194</b>. They pass through slots <b>150</b> and <b>152</b> in the piece <b>24</b>. Once assembled with the piece <b>24</b> in place, the BC is now ready to be connected to a main cylindrical air tank, such as <b>10</b> in <figref idref="DRAWINGS">FIG. 1</figref>.

<figref idref="DRAWINGS">FIG. 8</figref> shows the pre-assembly position of the first piece <b>20</b>, in place on a cylindrical tank, in relation to the second piece <b>22</b> also in place on its respective cylindrical tank. While only the pre-interconnect relationship of the pieces, <b>20</b> and <b>22</b>, comprising the first adaptation of the invention is shown in <figref idref="DRAWINGS">FIG. 8</figref>, the same relative position of piece <b>24</b>, affixed to the BC as shown in <figref idref="DRAWINGS">FIG. 7</figref>, to its mating piece <b>26</b> shown in <figref idref="DRAWINGS">FIG. 6</figref>, would be identical.

Consider first, however, the assembly of the BC with piece <b>24</b> affixed, to a main tank, for example <b>10</b> in <figref idref="DRAWINGS">FIG. 1</figref>. Piece <b>26</b> is attached to the main tank <b>10</b> with band-clamps <b>42</b> and <b>44</b>. Piece <b>22</b> would already be affixed to the main tank <b>10</b> using band-clamps <b>38</b> and <b>40</b>, prior to affixing piece <b>26</b> thereto (See <figref idref="DRAWINGS">FIG. 1</figref>). The BC with piece <b>24</b> affixed is positioned above the main tank <b>10</b> such that the circular portion <b>126</b> is axially aligned with the cavity <b>156</b> of the second piece <b>26</b>; and the cavity <b>120</b> axially aligned with the circular protrusion <b>162</b> of piece <b>26</b>. The BC with piece <b>24</b> attached is lowered down on to piece <b>26</b> such that the circular portions of the respective pieces <b>24</b> and <b>26</b> enter the corresponding cavities <b>120</b> and <b>156</b>. The tolerance of the aligning circular portions and the extensions <b>128</b> and <b>164</b>, and the complementing cavities are sufficiently, loosely dimensioned to permit easy axial engagement.

As the pieces <b>24</b> and <b>26</b> achieve the fully, interconnected position as shown in <figref idref="DRAWINGS">FIG. 1</figref>, the beveled surface <b>186</b> contacts the spring-biased plunger portion of the spring loaded, indexing plunger mechanism <b>142</b>. This forces the plunger back into the body of the mechanism until the plunger reaches the outside surface <b>200</b> of circular portion <b>160</b> between the beveled surface <b>186</b> and the cylindrically shaped indent <b>188</b>. With the pieces <b>24</b> and <b>26</b> fully engaged in their interconnected position, the plunger of mechanism <b>142</b> is then axially aligned with the center line of the indent <b>188</b> and is urged into that opening by the spring in the mechanism <b>142</b>. The two pieces are now affirmatively locked together. To facilitate the assembly procedure just described, the circular plug <b>190</b> disposed at the bottom of cavity <b>156</b> in piece <b>26</b> provides a stop for the descending BC with piece <b>24</b> attached. The plug <b>190</b> contacts the undersurface <b>202</b> (see <figref idref="DRAWINGS">FIG. 5</figref>) of the shortened circular portion <b>126</b>, at the point of interconnection between the pieces <b>24</b> and <b>26</b> where the spring-biased plunger is axially aligned with the indent <b>188</b>. The stop also shares the weight distribution of the tanks suspended from the BC with the plunger portion of the mechanism <b>142</b>.

Now the BC with main tank affixed can be secured to a second tank typically the smaller pony tank, <b>12</b>. <figref idref="DRAWINGS">FIG. 8</figref> illustrates this.

Prior to the assembly of the combination of the BC and main tank to the smaller pony tank, piece <b>20</b> of the first adaptation is secured to the pony tank <b>12</b> using band-clamps <b>34</b> and <b>36</b>. For purposes of clarity, the pony tank <b>12</b> is not depicted in <figref idref="DRAWINGS">FIG. 8</figref>. Nor is the main tank shown affixed to the piece <b>22</b>.

Piece <b>20</b> on the pony tank is positioned so that the bottom <b>204</b> of the cavity <b>48</b> is axially aligned with and positioned above the top surface <b>206</b> of circular protrusion <b>90</b>. Circular protrusion <b>54</b> is positioned so as to axially align with the opening of cavity <b>84</b>. The pony tank with the piece <b>20</b> secured thereto is brought in to cooperative relationship with the main piece <b>22</b> secured to the main tank by threading the circular protrusion <b>90</b> in to the cavity opening <b>48</b>, while engaging circular portion <b>54</b> of piece <b>20</b> in cavity <b>84</b> in piece <b>22</b>. As piece <b>20</b> moves downward, as viewed in <figref idref="DRAWINGS">FIG. 8</figref>, eventually the beveled surface <b>108</b> of protrusion <b>90</b> contacts the plunger <b>76</b> of indexing plunger mechanism <b>72</b>. Thereupon, as the piece <b>20</b> moves further, downwardly, the plunger <b>76</b> is urged further inwardly, until protrusion <b>76</b> axially aligns with the cylindrically indent <b>110</b> in the lateral outside surface. At this point the plunger is urged by the spring in mechanism <b>72</b> into engagement with the indent <b>110</b> for positive locking of the two pieces.

Circular plug <b>112</b> provides a support for the bottom end <b>80</b> of the circular portion <b>54</b> just at the point where the plunger <b>76</b> engages the cylindrically shaped indent <b>110</b>. The plug <b>112</b> prevents the user from over shooting the point of axial alignment between the plunger <b>76</b> and the indent <b>110</b>, something which could occur readily, due to the weight of the cylinder involved and the difficulty in exactly positioning the two tanks, relatively, at that point of alignment between the plunger and the indent. Further, the circular plug <b>112</b>, tightly fitted in the cavity <b>84</b>, provides a support surface for the weight of the tank <b>12</b>, approximately, evenly distributing the weight of the tank between the plunger and the plug <b>112</b>. The pony tank is now firmly secured to the buoyancy collar main tank combination in an affirmative locking way. It is precluded from disengaging from the BC-main tank combination due to the affirmative interlocking scheme afforded between the spring-loaded, indexing plunger mechanism <b>72</b> and the cylindrically shaped indent <b>110</b>, irrespective of the spatial orientation of the two tanks, which would be varied in a scuba diving application. The interconnection between the main tank and the buoyancy compensator through the affirmative, cooperative relationship between the spring-biased plunger portion of indexing mechanism <b>142</b> and the cylindrically shaped indent <b>188</b> ensures the two tanks will not disengage unintentionally from the BC.

When it is desired to separate the pony tank from the main tank, or the main tank from the buoyancy collar, one need to only to urge the plunger <b>76</b> of mechanism <b>72</b> or its counterpart in mechanism <b>142</b>, by urging the handle, for example <b>208</b> of plunger mechanism <b>72</b>, axially outward in the direction of arrow <b>210</b>. This disengages the plunger <b>76</b> from the indent opening <b>110</b>, allowing the separation of the pony tank from the main tank. So also, is the main tank easily disengaged from the buoyancy compensator.

The various angular edges of the pieces described, <b>20</b>, <b>22</b>, <b>24</b>, and <b>26</b> can be smoothed by known abrading techniques prior to the engagement of the plunger mechanisms to the respective pieces. This can be important in scuba diving applications.

Of course the location of the individual pieces on a particular cylindrical tank, i.e. piece <b>20</b> on tank <b>12</b> or piece <b>22</b> on tank <b>10</b>, is somewhat dictated by convenience but also economics. Assuming for the moment that the price of the piece <b>20</b> might be somewhat higher due to the fact that a plunger mechanism, a purchased part, would be required, and the fact that a scuba diver might have more pony tanks than perhaps main tanks such as tank <b>12</b>, it might be preferable to have the less expensive piece, <b>20</b>, mounted on the pony tank. In terms of operation, other than the relative positioning of the piece with the plunger mechanism above the piece without the plunger mechanism as depicted in <figref idref="DRAWINGS">FIG. 8</figref>, the advantages of the invention are the same and principally turn on the affirmative, quick engagement and disengagement of the two units.

<figref idref="DRAWINGS">FIG. 9A</figref> depicts a piece <b>212</b> which cooperates with piece such as <b>24</b> to form another adaptation of the invention <b>14</b>. The piece <b>212</b> is first cut to the desired length from a basic formed aluminum extrusion. For a scuba diving tank application, where this piece, <b>212</b>, is used to mate with piece <b>24</b>, the length would be approximately 12″ (30.5 cm). Once cut the piece <b>212</b> is machined to provide the surfaces and features necessary to implement the invention as to this specific adaptation.

In <figref idref="DRAWINGS">FIGS. 9A and 9B</figref>, the piece <b>212</b>, as extruded, is seen to include a second central body portion <b>214</b>. Formed at one lateral end is a cavity <b>216</b> which is interiorly disposed in the second central body portion. This cavity is partially circular. The cavity <b>216</b> is interconnected along its longitudinal length to and through the surface <b>218</b> of the central body portion <b>214</b>, via a rectangular cutout <b>220</b>. Formed at the other lateral end by the extrusion is a first, partially circular protrusion <b>222</b> extending outward from the second central body portion <b>214</b> and connected thereto by extension member <b>224</b>. The contours of <b>222</b> and <b>224</b>, and their respective dimensions and dimensional relationship to the second central body portion, complement the contours of cavity <b>216</b> and cutout <b>220</b>, and their dimensions, and dimensional relationships to the second central body portion <b>214</b>, for purposes apparent from the previous discussion.

Arcuate segments <b>226</b> and <b>228</b> are also formed in the basic extruded piece. These segments are designed into the extruding mold so as to eliminate unnecessary material from the piece, a benefit in scuba diving applications in that it reduces the weight of the piece <b>212</b>, and helps to minimize drag in the water.

The rear surface <b>230</b> of the piece <b>212</b> is formed having two partially arcuate surface portions <b>232</b> and <b>234</b> of predetermined radii. Both surface portions <b>232</b> and <b>234</b> of rear surface <b>230</b> as formed, extend the entire longitudinal length. Each has a radius which complements the radius of the outer surface of a larger cylindrical air tank, such as main tank <b>10</b>. Of course if there were a need, the surface portions <b>232</b> and <b>234</b> could be formed to each have the dual radii surface depicted and described in <figref idref="DRAWINGS">FIG. 6</figref>. Or alternately the surface portions <b>232</b> and <b>234</b> could be formed to each have the radius necessary to accommodate a smaller tank such as tank <b>12</b>.

Arcuate surface portions <b>232</b> and <b>234</b> are interconnected in the formed piece by a flat intermediary surface portion <b>236</b>.

Extending longitudinally, axially, in both directions from the second central body portion <b>214</b> are band-clamp retention portions, <b>238</b>, <b>240</b>, <b>242</b>, and <b>244</b>. Each of the associated facing surfaces as viewed in the direction of arrow <b>246</b> are machined to form a retaining groove which is dimensioned to accommodate the longitudinal width and thickness of the securing band portions of a band-clamp such as <b>42</b> described above. Slots <b>246</b>, <b>248</b>, <b>250</b>, and <b>252</b> are cut through the flat intermediary surface portion <b>236</b>. This enables respective bands of four associated band-clamps (not shown) to pass along retention portions <b>238</b>, <b>240</b>, <b>242</b>, and <b>244</b> and pass through slots <b>246</b>, <b>250</b> and <b>252</b>. Thus one tank is securely retained against surface <b>232</b> and one tank against surface <b>234</b>.

Circular protrusion <b>222</b> is machined on its top end to form a beveled surface <b>254</b>. As described for piece <b>26</b> above, the circular protrusion <b>222</b> is further machined to provide a cylindrically shaped indent <b>256</b>, at a point in the lateral outside surface, just below the end of the beveled surface <b>254</b>.

As described for piece <b>26</b>, circular plug <b>258</b> is sized to tightly fit at the bottom of cavity <b>216</b>. It is secured therein via a stainless steel pin <b>260</b> which is press-fitted through a compatible opening in the side-wall <b>262</b> and into a complementing hole (again, not seen) in the plug <b>258</b>.

The unit depicted in <figref idref="DRAWINGS">FIGS. 9A and 9B</figref> would be assembled to two tanks, typically two main tanks such as <b>10</b>, using suitable band-clamps at the top and bottom of piece <b>212</b>. The BC with piece <b>24</b> attached would then be positioned as described above with respect to piece <b>26</b>. Piece <b>24</b> would then be moved to engage piece <b>212</b> as described above so as to engage them in an affirmative interlock.

Referring now to <figref idref="DRAWINGS">FIGS. 10A and 10B</figref>, the teachings of the present invention are applied to another application. Here fire extinguisher <b>264</b>, to which <b>266</b> has been affixed by band-clamps <b>268</b> and <b>270</b>, is to be mounted to a vertical surface. Piece <b>266</b> is identical in all substantial respects, except, perhaps, for the length, to piece <b>20</b>. (See <figref idref="DRAWINGS">FIG. 3</figref>). It can be cut from the same extruded basic form from which pieces <b>20</b>, <b>22</b> and <b>26</b> are cut.

Piece <b>272</b> is formed from the same extruded piece used to fashion piece <b>24</b>, (see <figref idref="DRAWINGS">FIG. 5</figref>). However, the basic extruded piece is machined differently to accommodate this particular application. So for example, the piece <b>272</b> retains the formed flat surfaces <b>274</b> and <b>276</b> which facilitate its mounting to the vertical surface <b>278</b>. Further, the piece <b>272</b> is machined to include at least one opening, which could be a slot <b>280</b>, to accommodate bolts <b>284</b> and <b>286</b> used to secure the piece <b>272</b> to the vertical mounting surface. As illustrated, the bolts <b>284</b> and <b>286</b> pass through the slot in the piece <b>272</b>. The piece <b>272</b>, since made from the same basic extruded piece as piece <b>24</b>, includes a circular portion <b>288</b> and a cylindrical cavity <b>290</b>. Here, however, the circular portion extends the full length of the piece <b>272</b> and reflects the configuration of circular portion <b>90</b> of <figref idref="DRAWINGS">FIG. 4</figref>. I.e., circular portion <b>288</b> is further machined to include a beveled surface <b>292</b> and a cylindrical indent (not seen) just below the beveled surface where it meets the lateral side of the circular portion at a location identical to the location of cylindrical indent <b>110</b> on circular portion <b>90</b> as seen in <figref idref="DRAWINGS">FIG. 4</figref>. Further, the piece <b>272</b> is different from the piece <b>24</b>, in that a circular plug <b>294</b> is positioned in cavity <b>290</b> at the bottom, similar to circular plug <b>112</b> positioned in cavity <b>84</b> in piece <b>22</b> as seen in <figref idref="DRAWINGS">FIG. 4</figref>. The plug is tightly fit into the cavity and secured by an appropriate pin, again as disclosed above with respect to <figref idref="DRAWINGS">FIG. 4</figref>.

Once piece <b>266</b> is secured to the fire extinguisher <b>64</b>, and the piece <b>272</b> secured to the vertical mounting surface <b>278</b>, the user mounts the extinguisher to the surface by axially aligning circular portion <b>296</b> and cavity <b>298</b> of piece <b>266</b>, with the corresponding cavity <b>290</b> and circular piece <b>288</b> of piece <b>272</b>. Once aligned, the user would lower the fire extinguisher down onto the piece <b>272</b> in the direction of arrow <b>299</b>. When the plunger in the mechanism <b>300</b> contacts the beveled surface <b>292</b> it is urged back into the housing of mechanism <b>300</b> as described above. When the plunger portion is opposite the cylindrical indent (again, not seen) such as indent <b>110</b> in <figref idref="DRAWINGS">FIG. 4</figref>, the plunger is urged into the cylindrical indent by the spring in the housing. At this point the shortened cylindrical portion <b>296</b> rests on the top of the circular plug <b>294</b> to provide a balanced distribution of weight between the plug and the plunger portion of the mechanism <b>300</b>. To remove the extinguisher, the user would simply retract the plunger by the pulling outwardly on the handle of mechanism <b>300</b>, and then lift the extinguisher out of the interconnecting relationship between piece <b>266</b> and <b>276</b>.

It should be apparent, at this juncture, that the present invention has broad application to the mounting of various devices in a secure, quick and convenient way so that the item to be mounted can be easily removed. It is apparent that this could have application to the mounting of expensive electronic gear, on board ships as well as other items referred to above.

While the present invention has been disclosed in connection with versions shown and described in detail, various modifications and improvements will become readily apparent to those skilled in the art. Accordingly, the spirit and scope of the present invention is to be limited only by the following claims.