US3751625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater torch
Assignee: Arcair Co
•
Filing: 1972-03-01
•
Granted: 1973-08-07
•
Expires: 1992-03-01
Abstract
Abstract An underwater cutting and welding torch wherein in one embodiment the electrode is securely gripped by movable members held together by an elastic cover. The torch is further characterized in that a minimum of electrical conducting material is required resulting in a safer torch. An alternate apparatus for securing the electrode includes an elastic or elastomeric member that itself is one of the electrode gripping members.
Inventors
- 👤 J Hummel
- 👤 K Mccall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:13
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/0061
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
152 words
An underwater cutting and welding torch comprising in combination: a torch body having a fluid passage therethrough; valve means in said body for controlling the flow of fluid through said passage; a torch head in fluid-tight relation to said body, said head having a fluid passage communicating with the passage in said body on one end and with electrode holding means on said other end; said electrode holding means having a first electrically conductive electrode clamping member secured by said head and a second resiliently Deformable non-conductive electrode clamping member affixed to said head and surrounding said first electrode clamping member, said clamping members being constructed to exert a vise-like grip on said electrode; positive clamping means in said second electrode clamping member to provide more positive clamping of said electrode; means for bringing electrical current to said first electrode holding member; and means for introducing fluid to said torch body passage.
Claim 2
Dependent Claim
152 words
An underwater cutting and welding torch comprising in combination: a torch body having a fluid passage therethrough; valve means in said body for controlling the flow of fluid through said passage; a torch head in fluid-tight relation to said body, said head having a fluid passage communicating with the passage in said body on one end and with electrode holding means on said other end; said electrode holding means having a first electrically conductive electrode clamping member secured by said head and a second resiliently Deformable non-conductive electrode clamping member affixed to said head and surrounding said first electrode clamping member, said clamping members being constructed to exert a vise-like grip on said electrode; positive clamping means in said second electrode clamping member to provide more positive clamping of said electrode; means for bringing electrical current to said first electrode holding member; and means for introducing fluid to said torch body passage.
Claim 3
Dependent Claim
40 words
A torch according to claim 1 wherein there is included in said fluid passage in said head a spring loaded check valve constructed from inert materials for preventing back flow of fluid and other foreign objects into said torch body.
Claim 4
Dependent Claim
35 words
A torch according to claim 1 wherein said valve means includes a lever pivotably connected to a valve stem projecting from said body whereby an operator may control the flow of fluid through said torch.
Claim 5
Dependent Claim
30 words
A torch according to claim 1 wherein there is included sealing means associated with said electrode clamping means to provide a substantially fluid-tight seal around the periphery of said electrode.
References Cited (Backward Citations)
US2462463A
Cited
US2417650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |