A glue gun
Abstract
A gas-burnt glue gun comprises a heat conductive element in a combustion chamber at the bottom of a nozzle heated to melt a glue stick for the process of sealing or bonding, an ignition switch controlled to make a fire at a gas burner for burning a flow of gas from a gas tank so as to heat said heat conductive element for melting the glue stick, and a glue stick propelling mechanism to deliver a glue stick into said nozzle for melting.

Term
No projected expiry on record.
- Priority and filed
- Published
- Today
1 claim: 1 independent, 0 dependent
- 1What is claimed is:1. A gas-burnt glue gun comprising a housing consisted of two symmetrical shells, a nozzle fastened in said housing at a front end thereof, said nozzle having a combustion chamber at a bottom thereof and a glue stick melting hole through an axis thereof for melting a glue stick, said combustion chamber having a heat conductive element therein, a gas tank in a grip thereof, a gas burner at one end of said combustion chamber to burn a flow of gas from said gas tank through a gas tube in heating said heat conductive element, said gas burner having radiation fins attached thereto, a gas flow control device fastened in said gas tube at one end for controlling a flow of gas from said gas tank to said gas burner for burning, an ignition switch controlled to make a fire for burning a flow of gas from said gas tank regulating screw, wherein burning the flow of gas causes said heat conductive element to melt the glue stick inserted in said glue stick melting hole. Documents considered relevant following a search in respect of claims A SOLITARY CLAIM Category (see over) Identity of document and relevant passages Relevant to claim(s) NONE SF2(p) axw - c:\wp51\doc99\fil000091 Categories of documents X: Document indicating lack of novelty or of inventive step. Y: Document indicating lack of inventive step if combined with one or more other documents of the same category. A: Document indicating technological background and/or state of the art. P: Document published on or after the declared priority date but before the filing date of the present application. E: Patent document published on or after, but with priority date earlier than, the filing date of the present application. & Member of the same patent family, corresponding document. Databases: The UK Patent Office database comprises classified collections of GB, EP, WO and US patent specifications as outlined periodically in the Official Journal (Patents,. The on-line databases considered for search are also listed periodically in the Official Journal (Patents,. Published 1993 at The Patent OfBce, Concept House. CardifTRoad, Newport. Gwent NP9 1RH. Further copies may be obtained from Sales Branch. Unit 6. Nine Mile Point. Cwmfellnfach. Cross Keys, Newport. NP1 7HZ. Printed by Multiplex techniques ltd. St Maty Cray, Kent
31 paragraphs in 1 section, as filed
(71) Applicant
Chien Li Chu Wang
No. 10 Lane 136, Sec. 3, Chung Shan Rd, Chung Ho City, Taiwan (72) Inventor
Chien U Chu Wang (51) (52) (56) (58)
INT CL<sup>5 </sup>B05B 7/16
UK CL (Edition L) B2F FGF F110
Documents cited
None
Field of search UK CL (Edition K) B2F FGF INT CL<sup>5</sup> B05B 7/16 7/20 (74) Agent and/or Address for Service
W H Beck, Greener & Co
Stone Buildings, Lincoln's Inn, London, WC2A 3SZ, United Kingdom (54) A glue gun (57) A gas-burnt glue gun comprises a heat conductive element in a combustion chamber at the bottom of a nozzle heated to melt a glue stick for the process of sealing or bonding, an ignition switch controlled to make a fire at a gas burner for burning a flow of gas from a gas tank so as to heat said heat conductive element for melting the glue stick, and a glue stick propelling mechanism to deliver a glue stick into said nozzle for melting.
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GAS-BDRNT GLUE GUN
The present invention relates to and relates more particularly to a glue utilizes a gas burner in melting a glue the operation of sealing and bonding.
glue guns gun which stick for
In conventional glue guns, an AC power supply is used as a heating source in melting a glue stick for the operation of sealing. These AC power-operated glue guns are not satisfactory in use. An AC poweroperated glue gun must be used in limited places wherein
AC power supply is available. Melting a glue stick by heating an electric heating coil takes much time and can not eliminate the problem of incomplete melting of glue. Further, the glue stick forwarding mechanism may be damaged easily when an AC power-operated glue gun is operated during non-operation stage (AC power supply is not connected,.
The present invention has been accomplished to eliminate the aforesaid disadvantages. It is therefore the main object of the present invention to provide a glue gun which burns a flow of gas in melting a glue stick for the operation of sealing and bonding efficiently. According to the present invention, there is provided a gas-burnt glue gun which comprises a heat conductive element in a combustion chamber at the bottom of a nozzle heated to melt a glue stick for the process of sealing or bonding, an ignition switch controlled to make a fire at a gas burner for burning a flow of gas from a gas tank so as to heat said heat conductive element for melting the glue stick, and a glue stick propelling mechanism to deliver a glue stick into said nozzle for melting.
The present invention will now be described by way of example with reference to the annexed drawings, in which:—
Fig. 1 is an elevational view of the preferred embodiment of the glue gun of the present invention;
Fig. 2 is a cross section thereof showing its internal structure;
Fig. 3 is an exploded view of the nozzle, the silicone rubber tube, the heat conductive element and the gas burner
Fig. 4 is a perspective view of the ignition device.
Referring to Figs. 1, 2 and 3, a silicone rubber tube 3 is retained to a nozzle 16, which is set in the casing 1 of a glue gun at a front end thereof, by a spring 31 of the glue gun. The nozzle 16 comprises a combustion chamber 162 at a bottom thereof with a heat conductive element 163 set therein. The heat conductive element 163 may be a piece of asbestos to be heated for melting a glue stick. The combustion chamber 162 comprises a gas burner 82 attached with radiation fins 83 at an entrance (not shown) thereof. A gas tank 9 is fastened in the grip of the glue gun and connected to the gas burner 82 by a gas tube 91. A set of gas flow regulator knobs 7, 8 are provided at suitable locations for gas flow rate control. A retainer ring 14 is fastened inside a hole 12 on the casing 1 of the glue gun at a rear end thereof for holding a glue stick 17. The silicone rubber tube 3 has an annular flange 32 on a rear end thereof for holding the glue stick 17 which inserts through the hole 12 into the retainer ring 14. Pressing a press button 11 causes a spring 44 to pull a clamp 41 and a connection 42 so as to move a slide 4 forward. When the slide is moved forward, the glue stick 17 is firmly held by the clamp 41 and carried forward by the slide 4. Releasing the press button 11 causes the clamp 41 to release the glue stick 17 and simultaneously causes the slide 4 to be moved back to its original position.
Therefore, the glue stick 17 is not carried backwards when the slide 4 is moved back to its original position. Turning on the gas flow regulator knob 8 causes the gas tank 9 to discharge a flow of gas. Pressing an ignition switch 5 causes an ignition wire 511 to discharge sparks for burning the flow of gas. The ignition switch 5 has a side rod 51 inserted in a round hole 71 on the gas flow regulator knob 7. Pressing the ignition switch 5 simultaneously moves the gas flow regulator knob 7 downwards causing a big flow of gas to be discharged for quick burning. An regulator screw 53 is fastened in a screw hole 52 on the ignition switch 5. Therefore, the strength of the flame can be controlled by screwing the regulator screw 53 inwards or outwards on the screw hole 52. After ignition, the gas flow regulator knob 7 is immediately pushed back to its original position by a push rod 61 which is supported on a spring 62 inside a tube 6 (see Fig. 4). When the flow of gas is burnt at the gas burner 82, the nozzle 16 is heated by the heat conductive element 163 causing- the the glue stick 17, which has been moved forwards into the boring bore 161 of the nozzle 16, to be melted guickly. Continuously pressing the press button 11 causes the glue stick 17 to be continuously moved forward by the slide 4, and therefore, melted glue is moved out of the nozzle 16 for the operation of sealing or bonding.
5 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| WO0107173A1 | Cited by | World Intellectual Property Organization (WIPO) | International search |
| US8353283B2 | Cited by | United States of America | Search report |
| US9643200B2 | Cited by | United States of America | Applicant |
| US7520408B1 | Cited by | United States of America | Applicant |
| US7543580B1 | Cited by | United States of America | Applicant |
3 priority claims, no other members on record
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 9200399 | United Kingdom | A | |
| 9200399 | – | – | – |
| GB19920000399 | – | – | – |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)WithdrawnWAP | WAP |
Numbers
- Publication, DOCDB
- 2263243
- Publication, EPODOC
- GB2263243
- Application
- 9200399
- Application, DOCDB
- 9200399
- Application, EPODOC
- GB19920000399
Titles
- English
- A GLUE GUN
Classification
- CPC, 2
- B05C17/0055
- B05C17/00546