US3816065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas torches
Assignee: ANCIENS GUILBER Ets
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Filing: 1972-10-30
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Granted: 1974-06-11
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Expires: 1992-10-30
Abstract
Abstract A gas-flame or hot-gas torch specially designed for uniformly heating the entire periphery of tubes, sections or the like, especially for the purposes of brazing or annealing, in the form of a fork-shaped device comprising a main gas-supply conduit and two lateral arms, with a flame-distributor nozzle incorporated in each of said arms, the latter each having a general curvilinear enveloping shape with an internal wall constituted by the flame distributor nozzle, the extremities of the distributors adjacent to the main gas conduit having a transverse direction with respect to the said conduit, while the extremities of the distributors farthest away from the main gas conduit have a substantially longitudinal direction with respect to the said main conduit, the external walls of said arms, remote from said main conduit, having a substantially transverse direction with respect to the said conduit.
Inventors
- 👤 C Marietta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/38
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A gas-flame or hot-gas torch in the form of a two-armed fork device, comprising a main gas supply conduit, two lateral arms, nozzle means incorporated in said arms for applying heat around the whole periphery of an element such as a tube, section or the like engaged between said two arms, said arms each having a general curvilinear enveloping shape with an internal wall formed by a continuous gas distributor device constituting said nozzle means, the extremities of said distributors adjacent to said main gas conduit having a substantially transverse direction with respect to said conduit, while the extremities of said distributors remote from said main conduit have a substantially longitudinal direction with respect to said conduit, said arms having an external wall in the shape of a toboggan, of which the extremity remote from said main gas conduit has a substantially transverse direction with respect to said main conduit, each of said distributors being composed of an assembly of a wire gauze and a metallic grid element adjacent and rigidly fixed to each other.
Claim 2
Dependent Claim
175 words
A gas-flame or hot-gas torch in the form of a two-armed fork device, comprising a main gas supply conduit, two lateral arms, nozzle means incorporated in said arms for applying heat around the whole periphery of an element such as a tube, section or the like engaged between said two arms, said arms each having a general curvilinear enveloping shape with an internal wall formed by a continuous gas distributor device constituting said nozzle means, the extremities of said distributors adjacent to said main gas conduit having a substantially transverse direction with respect to said conduit, while the extremities of said distributors remote from said main conduit have a substantially longitudinal direction with respect to said conduit, said arms having an external wall in the shape of a toboggan, of which the extremity remote from said main gas conduit has a substantially transverse direction with respect to said main conduit, each of said distributors being composed of an assembly of a wire gauze and a metallic grid element adjacent and rigidly fixed to each other.
Claim 3
Dependent Claim
44 words
A torch as claimed in claim 1, in which the extremities of said distributor which are adjacent to said main gas conduit are separated from each other by an unperforated full wall which prevents dIrect and excessive flow of supply gas at that point.
Claim 4
Dependent Claim
33 words
A torch as claimed in claim 2, in which said unperforated wall comprises a projecting portion adapted to form an abutment means for limiting the engagement of said element between said two arms.
Claim 5
Dependent Claim
29 words
A torch as claimed in claim 1, in which said curvilinear arms and said main gas supply conduit are constituted by two symmetrical half shells fixed to each other.
Claim 6
Dependent Claim
38 words
A torch as claimed in claim 4, said half shells having positioning grooves receiving said distributors in such manner that said distributors are rigidly fixed to said half shells when said half shells are fixed to each other.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |