US3120649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric pliers
Assignee: Poudre Products Co Inc
•
Filing: 1961-10-12
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Granted: 1964-02-04
•
Expires: 1981-10-12
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Kolterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:38
CPC Classifications
B; B23; B23K; B23K3/00; B23K3/04; B23K3/047; B23K3/0476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
AN ELECTRIC HEATING ARRANGEMENT FOR USE IN HEATING SWEAT JOINTS AND THE LIKE, COMPRISING IN COMBINATION A TRANSFORMER HAVING A PRIMARY WINDING ADAPTED TO BE CONNECTED TO AN ELECTRIC POWER SOURCE, MEANS CONNECTING THE PRIMARY OF SAID TRANSFORMER TO THE POWER SOURCE, SAID TRANSFORMER HAVING A SECONDARY WINDING WITH A SUBSTANTIALLY SMALLER NUMBER OF TURNS THAN THE PRIMARY TO PROVIDE AN OUTPUT THEREFROM OF A SUBSTANTIALLY LOWER VOLTAGE THAN THE POWER SOURCE AT HIGH CURRENT, SAID SECONDARY WINDING BEING MULTI-LAYERED AND COMPRISED OF BIFILAR WOUND INSULATED CONDUCTOR OF RECTANGULAR CROSS-SECTION WITH ONEHALF OF THE BIFILAR WOULD SECONDARY BEING ELECTRICALLY CONNECTED IN SERIES AIDING RELATION WITH THE OTHER HALF AND THE OUTPUT OF THE TRANSFORMER BEING ADAPTED TO BE CONNECTED TO A WORK-PIECE TO BE HEATED WHEREIN THE CONDUCTORS OF ONE LAYER OF THE SECONDARY WINDING OF THE TRANSFORMER ARE OFFSET WITH RESPECT TO SUPERPOSED CONDUCTORS OF ADJACENT LAYERS THEREOF.
Claim 2
Dependent Claim
149 words
AN ELECTRIC HEATING ARRANGEMENT FOR USE IN HEATING SWEAT JOINTS AND THE LIKE, COMPRISING IN COMBINATION A TRANSFORMER HAVING A PRIMARY WINDING ADAPTED TO BE CONNECTED TO AN ELECTRIC POWER SOURCE, MEANS CONNECTING THE PRIMARY OF SAID TRANSFORMER TO THE POWER SOURCE, SAID TRANSFORMER HAVING A SECONDARY WINDING WITH A SUBSTANTIALLY SMALLER NUMBER OF TURNS THAN THE PRIMARY TO PROVIDE AN OUTPUT THEREFROM OF A SUBSTANTIALLY LOWER VOLTAGE THAN THE POWER SOURCE AT HIGH CURRENT, SAID SECONDARY WINDING BEING MULTI-LAYERED AND COMPRISED OF BIFILAR WOUND INSULATED CONDUCTOR OF RECTANGULAR CROSS-SECTION WITH ONEHALF OF THE BIFILAR WOULD SECONDARY BEING ELECTRICALLY CONNECTED IN SERIES AIDING RELATION WITH THE OTHER HALF AND THE OUTPUT OF THE TRANSFORMER BEING ADAPTED TO BE CONNECTED TO A WORK-PIECE TO BE HEATED WHEREIN THE CONDUCTORS OF ONE LAYER OF THE SECONDARY WINDING OF THE TRANSFORMER ARE OFFSET WITH RESPECT TO SUPERPOSED CONDUCTORS OF ADJACENT LAYERS THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |