Gas tap

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DATE OF PRESENTATION

Yes.

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SPAIN

ELQ DE ÜIWAD May 1,977.

<td>&lt;3θ) PHIORITIES:</td><td></td><td></td>

<td>^ NUMBER</td><td>θ DATE</td><td>θ COUNTRY</td>

<td> 6126/76 \</td><td>June 1, 1976</td><td>australian</td>

DATE OE PUBLICATION fHIJ INTERNATIONAL CLASSIFICATION fe4J TITLE OF THE INVENTION

GAS TAP © = LOLICITANT (S)

VA DEUTSHER PROPIETARY LIMITED

APPLICANT'S ADDRESS

600 South Road, Moorabbin, Victoria - Australia

72) INVENTOR &lt;EN)

Ronald George Cutts, of Australian nationality.

HOLDER &lt;ES&gt;

The same applicant.

REPRESENTATIVE

DON BERNARDO UNGRIA GOIBURU.

UNE A - 4 MOD. 3204

BE USED AS THE FIRST MEMORY PAGE

- 2 SEP: ITW Case No. 3020

EXTRACT FROM THE DESCRIPTION

A gas tap is described that includes: a body element, a casing, a dosing device, and a control device, characterized in that said body element includes an inlet port that allows the gas to enter an inlet chamber and an outlet port, being said dosing device adapted to allow the entry of the gas into said inlet chamber and can be activated, by means of a movement of said control device to regulate the amount and flow rate of gas from said inlet chamber to said outlet port.

FIELD OF APPLICATION OF THE INVENTION

The invention relates to gas taps and more particularly, although not exclusively, to design gas taps. I swim mainly to be used in gas stoves.

To date, most gas taps have been built using conical males and cast brass bodies. These gas taps were expensive to manufacture, due to the need for precise machining of their respective elements, and they also had inefficient operation, effective due to gas leaks, the effects of the corro, sion, etc.

Accordingly, the main object of the invention is to provide a gas tap that can be manufactured more economically and has a more efficient operation.

DESCRIPTION OF THE INVENTION

Another object of the invention is to provide a gas tap which, due to its operating principle, is really child-proof. ” Based on the above .5 objects, as well as others, the present invention provides a gas tap that includes: a body element, a casing, a dosing device and a control device, characterized in that said body element includes an inlet port that allows the gas to communicate with an inlet chamber and an outlet port, said device being of dosage adapted so that it allows the gas to communicate with said inlet chamber and can be activated, when operating in said control device, to regulate the amount and speed of gas circulation from said inlet chamber to said outlet port.

DESCRIPTION OF THE DRAWINGS

To facilitate understanding of the invention, a preferred embodiment of a gas tap incorporating the features of the present invention will now be described; This description is given as a non-limiting example, and it refers to the accompanying illustrative drawings.

\

In the drawings:

Figure 1 is an end elevation view of a gas tap according to the present invention; Figure 2 is a vertical cross-sectional view taken through the gas tap of Figure 1, along the line and in the direction of arrows 2-2 of Figure 1, the gas tap being in the closed position (OFF);

Figure 3 is a vertical cross-sectional view of the lime taken along the line and in the direction of the figures 3-3 of Figure 2 depicting in broken lines the dosing tap in four operating positions30

- 4 to different, corresponding to the positions of CLOSE, ON, REDUCED POWER, MAXIMUM POWER (OFF, IGNITION, SIMMER and HIGH);

Figure 4 is a partial cross-sectional view taken along the line and in the direction of arrows 4-4 of Figure 3, to represent in more detail the operating relationship between some of the tap elements of gas according to the present invention;

Figure 5 is a vertical cross-sectional view taken along the line and in the direction of arrow 5-5 of Figure 2;

Figure 6 is a view of a dosing disk according to the present invention, taken from the direction of the inlet chamber; and Figure 7 is a vertical cross-sectional view, through the gas tap of Figure 1, taken equally along the line and in the direction of arrows 2-2 of Figure 1, the gas tap in the operating position (ON).

DESCRIPTION OF THE PREFERRED EMBODIMENT

The illustrated gas tap has four main components, namely a button 10, a dosing disk 32, an envelope 18 and a body 48.

The button 10 is mounted on the outermost end of an axis 12 which has, on its innermost tip, a widened head portion provided with a certain number of grooves 14 arranged around its outer surface, and extending in its longitudinal direction Extending radially from axis 12, there is an L-shaped appendix 16, whose outermost portion extends longitudinally

- 5 10 mind forward in the direction of button 10.

The appendix 16 is arranged so that it is placed in a hole 22 formed in the envelope 28, where it is juxtaposed to an ear 24. The ear 24 is preferably signed by stamping the envelope 18 to form the hole 22 and serve as a stop of limitation that prevents the button 10 from being turned beyond the closed position.

The envelope 18 also has a flange 20 that extends longitudinally outwards and that surrounds the axis 12 in its outer regions. This tab 20 serves to place the outer regions of the axis 12 in the radial direction and also to constitute a bearing during the rotation of the button 10. Located in an arc shape around the flange 20 is a certain number of cavities 26 formed in the envelope 18, which serve as indication marks of the various degrees of rotation of the button 10, that is to say that they correspond to the different operating positions . Appendix 16 is placed in these cavities 26.

In order to orient the shaft 12 and the button 10 in the outward-facing direction to keep the appendix 16 in any of the cavities 26 or in the hole 22, the shaft is provided at its innermost end, with a blind hole. 28 in which a compression spring 30 is located.

The spring 30 is also in contact with the innermost surface of a central cavity 34 formed in the dosing disk 32. The central cavity 34 is provided with grooves 36 around its side walls, and these grooves cooperate with the grooves 14 formed in axis 12, so that the rotation of button 10 not only produces the

- 6 rotation of axis 12, but also the rotation of the dosing disk 32.

As can be seen above, the button 10 and the axis 12 must be moved longitudinally inwards to remove the appendix 16 from the hole 22 or from. any one of the cavities 26 before it is possible to rotate the button 10. This constitutes a safety system since the need to perform a movement plus a rotational movement to operate the gas tap means that young children They can't play with the gri. fo and let the gas out or it will change, gas flow existing at that time.

The dosing tap 32 has an external surface 38 that has a conicity radially inwards in the direction oriented longitudinally outwards. The disk 32 also has a front surface 44 and a rear surface 40. Formed on the surface. front groove 44 is an arc-shaped groove 46 that extends along a considerable part of the circumference of the front surface 44. Formed in the rear surface 40 and offset with respect to the groove 46 is an L-shaped cavity 42 (see Figure 6). The fun; tion of this cavity 42 will be more clearly understood by reading the following description.

The rear surface 40 of the dosing disk 32 is disposed against the front surface 30 of the body 48 and in a sealed position therewith. These two surfaces 40 and 50 constitute the only two gas tap surfaces that require moderate precision machining. This result contrasts sharply with the prior art gas taps that required high precision machining on all cooperating surfaces.

The body 48 has an inlet opening 52 that communicates with an inlet manifold 54 that supplies the gas to the gas tap, and with an inlet chamber 55 formed on its front surface 50 of the body 48. The inlet chamber 56 (as shown in FIG. 3) has a centl-to-57 portion with a wing-shaped shape and a two-sided view, a curved upper portion 58 and a curved lower portion 60. Another portion of the inlet chamber 56 constitutes a reduced power operating portion 62 that is connected to the rest of the inlet chamber 56 by a tube 64 (hidden from view).

Likewise formed on the front surface 50 of the body 48, but located radially outwardly of the inlet chamber 56, there is a groove 68 that extends in an arc shape around the surface 50 with an extension slightly less than 360 °. This groove 68 has a widened portion 70 radially located above the upper portion 58 of the inlet chamber 56, and this portion 70 co. munica directly with an outlet orifice 66 to supply the gas to an outlet manifold 72.

In order to hold the gas tap in position. tion in a stove or similar apparatus, body 48 is pro. seen from three ears 74 provided with holes 76 that pass through them (see figure 3)

The operation of the gas tap is as follows. The gas is supplied to the inlet chamber 56 through the inlet port 52 and the inlet manifold 54. Next, the cavity 42 allows the gas to penetrate the groove 68 and exit the outlet port 66 when The dosing disk 32 has been rotated to a position in which the cavity 42 allows the gas to reach the inlet chamber 56j at the same time to the groove 68 (Figure 7). When cavity 42 does not_x it allows the gas to reach the groove 68 and the inlet chamber da 56, then the gas cannot leave the inlet chamber 56 and therefore there is no gas circulation, the tap being then in the closed position (OPP) that It is represented in figure 2.

Referring now to FIG. 3, the cavity 42 is shown in broken lines in the four different operating positions marked CLOSURE, 'POWER ON, REDUCED POWER and GREAT POWER, respectively (OPP,

IGNITION, SIMMER and HIGH). In the closed position, the cavity 42 does not allow gas to circulate anywhere in the inlet chamber 56. Therefore, there is no gas circulation to the outlet orifice 66 and the gas closure is at po. inactive position. By rotating the button 10 in the counterclockwise direction, the dosing disk 32 will rotate until the cavity 42 is placed in a position in which the gas can flow at the same time in the widened portion 72 of the groove i 68 and in the upper portion 58 of the input chamber 56. From. Due to the enlarged surface of portions 58 and 70, the circulation of the gas will be relatively important, and therefore this position will correspond to the ignition position (IG NITION) that allows the automatic ignition of the stove or, if, milled.

By turning button 10 further in the counterclockwise direction, the dosing disk 32 will rotate further until the cavity 42 communicates with a reduced power operating portion 62 of the inlet chamber 56 and communicates in a reduced degree with the two ends of the groove 68. Due to · 1 $ relatively small communication surfaces, the gas circulation will be relatively limited and therefore this position will correspond to a reduced power position (Slffi® or DOW) of the stove or similar appliance.

By turning the knob 10 further counterclockwise, the dosing disk will rotate progressively until the cavity 42 ensures the entry of the gas into the lower portion 60 of the inlet chamber 56 adjacent to the central portion 56, as well as in the groove 68. Due to the moderately wide communication surface, the circulation of the gas will be moderately important, and therefore this position corresponds to the high power (HIGH) operating position of the stove or similar device.

In practice, it has been found that the gas flow increases approximately linearly between the positions of reduced power and high power (LOW and HIGH).

It is clear that the configurations of the groove 68 and the inlet chamber 56 could be altered to place different gas flow positions in different locations.

Although a preferred embodiment of a gas tap according to the invention has been described above, those skilled in the art will understand that numerous variations and modifications of design or construction details could be made without departing from the essential nature of the invention. as will be understood by reading carefully the foregoing.

- 10 .5

In summary, this requested Utility Model must fall into the following: