Patent US3053370A successfully refreshed from Google Patents.
Patent US3135851A successfully refreshed from Google Patents.
US3135851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resistance welding apparatus including a transformer
Assignee: Individual
•
Filing: 1961-12-27
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Granted: 1964-06-02
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Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:26
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/06; H; H01; H01F; H01F38/00; H01F38/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A RESISTANCE WELDING APPARATUS COMPRISING A SUPPORTING SHAFT, A WELDING TRANSFORMER INCLUDING A PRIMARY WINDING COMPRISING A PLURALITY OF SEPARATE COIL SECTIONS SPACED APART CIRCUMFERENTIALLY OF SAID SHAFT IN SPACED RELATION TO THE SHAFT AND CONNECTED IN CIRCUIT WITH EACH OTHER WITH THEIR AXES PERPENDICULAR TO AXIAL PLANES OF SAID SHAFT, AND A SECONDARY CIRCUIT THAT INCLUDES A PAIR OF WELDING ELECTRODES MOUNTED ON SAID SHAFT IN INSULATED RELATION TO EACH OTHER AND IN SPACED RELATION TO SAID PRIMARY WINDING, SAID SECONDARY CIRCUIT ALSO COMPRISING A PLURALITY OF SEPARATE AND DISTINCT UNITS EACH HAVING PORTIONS ENCIRCLING AND IN INDUCTIVE RELATION TO ONE OF SAID COIL SECTIONS, EACH UNIT HAVING TWO TERMINALS EACH CONNECTED TO ONE OF SAID ELECTRODES.
Claim 2
Dependent Claim
118 words
A RESISTANCE WELDING APPARATUS COMPRISING A SUPPORTING SHAFT, A WELDING TRANSFORMER INCLUDING A PRIMARY WINDING COMPRISING A PLURALITY OF SEPARATE COIL SECTIONS SPACED APART CIRCUMFERENTIALLY OF SAID SHAFT IN SPACED RELATION TO THE SHAFT AND CONNECTED IN CIRCUIT WITH EACH OTHER WITH THEIR AXES PERPENDICULAR TO AXIAL PLANES OF SAID SHAFT, AND A SECONDARY CIRCUIT THAT INCLUDES A PAIR OF WELDING ELECTRODES MOUNTED ON SAID SHAFT IN INSULATED RELATION TO EACH OTHER AND IN SPACED RELATION TO SAID PRIMARY WINDING, SAID SECONDARY CIRCUIT ALSO COMPRISING A PLURALITY OF SEPARATE AND DISTINCT UNITS EACH HAVING PORTIONS ENCIRCLING AND IN INDUCTIVE RELATION TO ONE OF SAID COIL SECTIONS, EACH UNIT HAVING TWO TERMINALS EACH CONNECTED TO ONE OF SAID ELECTRODES.
References Cited (Backward Citations)
US1811886A
Cited
US2052963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |