Patent US4379516A successfully refreshed from Google Patents.
US4379516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for dispensing fused materials such as thermoplastic adhesives
Assignee: FRANCAISE D'AGRAFAGE INDUSTRIEL - SOFRAGRAF SAINT-AME A Co OF FRANCE Ste
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Filing: 1980-12-12
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Granted: 1983-04-12
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Expires: 2000-12-12
Abstract
Abstract The invention relates to a device for dispensing a fused material. This device comprises a heating chamber, into which a rod of the material to be dispensed is progressively introduced. A clamping member is arranged so as to catch the rod. When a push is exerted on an end of the rod, the clamping member is carried away with the rod towards the heating chamber while biasing a resilient return element. When a push is no longer exerted on the rod, the last is brought rearwards under the action of the biased return element on the clamping member. This avoids untimely dispensing fused material.
Inventors
- 👤 Rene Barlogis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:02
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00523; B05C17/0054; B05C17/00543; B05C17/00526; B05C17/0053; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17119
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
135 words
A device for dispensing a fused material such as a thermoplastic adhesive, comprising a housing equipped with a heating chamber including a delivery nozzle and an inlet tube for progressively introducing a rod of the material to be dispensed into said heating chamber, whereby the material of the introduced rod is progressively fused and expelled outside of the heating chamber through said delivery nozzle, a clamping member arranged so as to catch the rod, so that said clamping member is carried away with said rod when a push is exerted on said rod, and means for generating a resilient return force when said clamping member is carried away with said rod, so that said rod is brought rearwards under the action of said return force when a push is no longer exerted on said rod.
Claim 2
Independent Claim
135 words
A device for dispensing a fused material such as a thermoplastic adhesive, comprising a housing equipped with a heating chamber including a delivery nozzle and an inlet tube for progressively introducing a rod of the material to be dispensed into said heating chamber, whereby the material of the introduced rod is progressively fused and expelled outside of the heating chamber through said delivery nozzle, a clamping member arranged so as to catch the rod, so that said clamping member is carried away with said rod when a push is exerted on said rod, and means for generating a resilient return force when said clamping member is carried away with said rod, so that said rod is brought rearwards under the action of said return force when a push is no longer exerted on said rod.
Claim 3
Dependent Claim
40 words
A device according to claim 1, wherein the clamping member is slidingly disposed on the inlet tube and has resilient arms that are fitted with jaws for clamping the rod at some distance upstream with respect to said inlet tube.
Claim 4
Dependent Claim
17 words
A device according to claim 2, wherein the jaws have chamfered ridges thereon for engaging the rod.
Claim 5
Dependent Claim
24 words
A device according to claim 2, wherein the clamping member includes a spring that is supported on the housing for exerting the return force.
Claim 6
Dependent Claim
32 words
A device according to claim 4, wherein the clamping member comprizes two half shells, each having thereon a base for supporting the spring, whereby the closing of the clamping jaws is produced.
Claim 7
Dependent Claim
63 words
A hand-held dispenser gun according to claim 1, wherein the open end of the inlet tube, opposed to the heating chamber, is disposed so that the user can directly push a rod of the material to be dispensed into said inlet tube, and the clamping member is mounted on the part of said inlet tube which is near to the open end thereof.
Claim 8
Dependent Claim
23 words
A device according to claim 1, which further comprises means for feeding the rod of material to be dispensed into said inlet tube.
Claim 9
Dependent Claim
18 words
A device according to claim 7, wherein the clamping member is disposed downstream of said rod feeding means.
Claim 10
Dependent Claim
43 words
A device according to claim 7, wherein the rod feeding means comprises an annular cylinder-and-piston actuator, through which the rod is engaged, and the clamping member is arranged to protrude within the cylinder of said actuator so as to catch said rod therein.
Claim 11
Independent Claim
192 words
A device for dispensing a fused material such as a thermoplastic adhesive, comprising a housing equipped with a heating chamber including a delivery nozzle and an inlet tube for progressively introducing a rod of the material to be dispensed into said heating chamber, whereby the material of the introduced rod is progressively fused and expelled outside of the heating chamber through said delivery nozzle, a clamping member arranged so as to catch the rod, so that said clamping member is carried away with said rod when a push is exerted on said rod, and means for generating a resilient return force when said clamping member is carried away with said rod, so that said rod is brought rearwards under the action of said return force when a push is no longer exerted on said rod, the clamping member is slidingly disposed on the inlet tube and has resilient arms that are fitted with jaws for clamping the rod at some distance upstream with respect to said inlet tube, and the clamping member is formed with resilient wings for propping it upon the housing, said wings being adapted to exert the return force.
Claim 12
Independent Claim
192 words
A device for dispensing a fused material such as a thermoplastic adhesive, comprising a housing equipped with a heating chamber including a delivery nozzle and an inlet tube for progressively introducing a rod of the material to be dispensed into said heating chamber, whereby the material of the introduced rod is progressively fused and expelled outside of the heating chamber through said delivery nozzle, a clamping member arranged so as to catch the rod, so that said clamping member is carried away with said rod when a push is exerted on said rod, and means for generating a resilient return force when said clamping member is carried away with said rod, so that said rod is brought rearwards under the action of said return force when a push is no longer exerted on said rod, the clamping member is slidingly disposed on the inlet tube and has resilient arms that are fitted with jaws for clamping the rod at some distance upstream with respect to said inlet tube, and the clamping member is formed with resilient wings for propping it upon the housing, said wings being adapted to exert the return force.
Claim 13
Independent Claim
147 words
A device for dispensing a fused material such as a thermoplastic adhesive, comprising a housing equipped with a heating chamber including a delivery nozzle and an inlet tube for progressively introducing a rod of the material to be dispensed into said heating chamber, whereby the material of the introduced rod is progressively fused and expelled outside of the heating chamber through said delivery nozzle, a clamping member arranged so as to catch the rod, so that said clamping member is carried away with said rod when a push is exerted on said rod, and means for generating a resilient return force when said clamping member is carried away with said rod, so that said rod is brought rearwards under the action of said return force when a push is no longer exerted on said rod, and the clamping members is made of one single piece of material.
Claim 14
Independent Claim
147 words
A device for dispensing a fused material such as a thermoplastic adhesive, comprising a housing equipped with a heating chamber including a delivery nozzle and an inlet tube for progressively introducing a rod of the material to be dispensed into said heating chamber, whereby the material of the introduced rod is progressively fused and expelled outside of the heating chamber through said delivery nozzle, a clamping member arranged so as to catch the rod, so that said clamping member is carried away with said rod when a push is exerted on said rod, and means for generating a resilient return force when said clamping member is carried away with said rod, so that said rod is brought rearwards under the action of said return force when a push is no longer exerted on said rod, and the clamping members is made of one single piece of material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |