Patent US3389846A successfully refreshed from Google Patents.
US3389846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pipe welder
Assignee: General Dynamics Corp
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Filing: 1966-11-03
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Granted: 1968-06-25
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Claffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:43
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0282; B23K9/0286
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AUTOMATIC PIPE WELDING APPARATUS, COMPRISING A SPLIT GEAR HOUSING HAVING AN OPENING FORMED THEREIN AND A BOTTOM WALL EXTENDING BEYOND THE SIDE WALLS OF THE HOUSING AND ADAPTED TO SECURE THE HOUSING TO A FIRST PIPE, A SPLIT GEAR ASSEMBLY HAVING A TOOTH PORTION LOCATED WITHIN THE OPENING OF THE HOUSING AND A FLANGE PORTION EXTENDING BEYOND ONE OF THE SIDE WALLS OF THE HOUSING AND IN SUPERPOSED RELATION WITH THE BOTTOM WALL OF THE HOUSING, A WELDING TORCH MOUNTING CLAMP MOUNTED ON THE FLANGE PORTION OF THE SPLIT GEAR ASSEMBLY FOR CLAMPING BOTH HALVES OF THE SPLIT GEAR ASSEMBLY TOGETHER, A WELDING TORCH ASSEMBLY ATTACHED TO THE MOUNTING CLAMP AND HAVING A WELDING TORCH FOR WELDING THE FIRST PIPE TO A SECOND PIPE AND MEANS FOR DRIVING THE TOOTH PORTION OF THE SPLIT GEAR ASSEMBLY TO THEREBY ROTATE THE WELDING TORCH AROUND A JUNCTION BETWEEN THE FIRST AND SECOND PIPES.
Claim 2
Dependent Claim
151 words
AUTOMATIC PIPE WELDING APPARATUS, COMPRISING A SPLIT GEAR HOUSING HAVING AN OPENING FORMED THEREIN AND A BOTTOM WALL EXTENDING BEYOND THE SIDE WALLS OF THE HOUSING AND ADAPTED TO SECURE THE HOUSING TO A FIRST PIPE, A SPLIT GEAR ASSEMBLY HAVING A TOOTH PORTION LOCATED WITHIN THE OPENING OF THE HOUSING AND A FLANGE PORTION EXTENDING BEYOND ONE OF THE SIDE WALLS OF THE HOUSING AND IN SUPERPOSED RELATION WITH THE BOTTOM WALL OF THE HOUSING, A WELDING TORCH MOUNTING CLAMP MOUNTED ON THE FLANGE PORTION OF THE SPLIT GEAR ASSEMBLY FOR CLAMPING BOTH HALVES OF THE SPLIT GEAR ASSEMBLY TOGETHER, A WELDING TORCH ASSEMBLY ATTACHED TO THE MOUNTING CLAMP AND HAVING A WELDING TORCH FOR WELDING THE FIRST PIPE TO A SECOND PIPE AND MEANS FOR DRIVING THE TOOTH PORTION OF THE SPLIT GEAR ASSEMBLY TO THEREBY ROTATE THE WELDING TORCH AROUND A JUNCTION BETWEEN THE FIRST AND SECOND PIPES.
References Cited (Backward Citations)
US2914011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |