Patent US5388062A successfully refreshed from Google Patents.
Patent US3588418A successfully refreshed from Google Patents.
US3588418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic welding apparatus
Assignee: ROBERT WATSON AND CO CONSTRUCTIO
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Filing: 1969-02-05
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Granted: 1971-06-28
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Expires: 1989-02-05
Abstract
Abstract AN AUTOMATIC WELDING APPARATUS FOR WELDING STUDS TO A BEAM COMPRISING A WHEELED CARRIAGE HAVING A NUMBER OF WELDING GUNS MOUNTED THEREON, EACH WELDING GUN IS ARRANGED TO BE RAISED AND TILTED FROM AN OPERATIVE OR WELDING POSITION TO A STUD ACCEPTING POSITION IN WHICH THE GUN IS AUTOMATICALLY CUT OFF FROM ITS ELECTRIC SUPPLY. THE CARRIAGE IS MOVABLE ALONG THE BEAM BY MEANS OF RECIPROCATING GRIPPER ARRANGEMENT ON THE CARRIAGE WHICH ENGAGES A STUD WELDED TO THE BEAM AND DRAGS THE CARRIAGE ALONG THE BEAM.
Inventors
- 👤 Edward Chiffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:01
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/20; B23K9/201
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |