US3311968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of making electrical resistors
Assignee: Individual
•
Filing: 1962-12-03
•
Granted: 1967-04-04
•
Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Ardouin Jean Jules Henri
- 👤 Torossian Alexandre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:39
CPC Classifications
H; H01; H01C; H01C7/00; H01C1/00; H01C1/14; H01C1/144; H01C1/148; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49098; Y10T29/49099; Y10T29/49101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF MANUFACTURING AN ELECTRIC RESISTOR WHICH COMPRISES STARTING FROM A CYLINDRICAL CORE OF AN INSULATING MATERIAL, PROVIDING EACH OF THE AXIAL ENDS OF THE CORE WITH A SERIES OF GROOVES, COVERING EACH OF SAID CORE ENDS WITH AN ELECTRICALLY CONDUCTIVE FILM, FORMING ON SAID CORE AN ELECTRICALLY RESISTIVE COATING CONNECTED ELECTRICALLY WITH SAID END CONDUCTIVE FILMS, AND FORCE FITTING ON EACH OF SAID CORE ENDS, IN SUCH MANNER AS PARTIALLY TO INTERFIT SAID GROOVES, A HOLLOW END CAP OF A SUBSTANCE HAVING A GOOD ELECTRICAL CONDUCTIVITY THE INTERNAL DIAMETER OF WHICH CAP IS SLIGHTLY LESS THAN THE MAXIMUM DIAMETER OF SAID CORE END TO BE CAPPED.
Claim 2
Independent Claim
108 words
THE METHOD OF MANUFACTURING AN ELECTRIC RESISTOR WHICH COMPRISES STARTING FROM A CYLINDRICAL CORE OF AN INSULATING MATERIAL, PROVIDING EACH OF THE AXIAL ENDS OF THE CORE WITH A SERIES OF GROOVES, COVERING EACH OF SAID CORE ENDS WITH AN ELECTRICALLY CONDUCTIVE FILM, FORMING ON SAID CORE AN ELECTRICALLY RESISTIVE COATING CONNECTED ELECTRICALLY WITH SAID END CONDUCTIVE FILMS, AND FORCE FITTING ON EACH OF SAID CORE ENDS, IN SUCH MANNER AS PARTIALLY TO INTERFIT SAID GROOVES, A HOLLOW END CAP OF A SUBSTANCE HAVING A GOOD ELECTRICAL CONDUCTIVITY THE INTERNAL DIAMETER OF WHICH CAP IS SLIGHTLY LESS THAN THE MAXIMUM DIAMETER OF SAID CORE END TO BE CAPPED.
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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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |