Patent US3211031A successfully refreshed from Google Patents.
US3211031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of potentiometers
Assignee: Societe dElectronique et dAutomatisme SA
•
Filing: 1962-03-06
•
Granted: 1965-10-12
•
Expires: 1982-03-06
Abstract
No abstract record available.
Inventors
- 👤 Martin Jacques Edouard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:39
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/22; H01C17/235; H01B; H01B1/00; H01C10/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T83/00; Y10T83/02; Y10T83/0304; Y10T83/162; Y10T83/173; Y10T83/175; Y10T83/178
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
APPARATUS FOR FORMING A DESIRED TAPER ON A POTENTIOMETER TRACK FORMED OF AN ELONGATED FILM OF RESISTIVE MATERIAL APPLIED TO ONE FACE OF A DIELECTRIC BASE AND HAVING A TERMINAL AT EACH END, AID APPARATUS COMPRISING: A TOOL FOR CUTTING A GROOVE THROUGH THE FILM ONTO THE BASE; FIRST DRIVING MEANS PRODUCING RELATIVE MOVEMENT BETWEEN THE BASE AND SAID TOOL LONGITUDINALLY OF THE STRIP; SECOND DRIVING MEANS FOR MOVING SAID TOOL TRANSVERSELY OF THE TRACK DURING THE OPERATION OF SAID FIRST DRIVING MEANS; MEANS FOR CONNECTING A CONSTANT SOURCE OF CURRENT TO THE END TERMINALS OF THE TRACK DURING OPERATION OF SAID DRIVING MEANS; MEANS FOR DETECTING THE POTENTIAL DIFFERENCE BETWEEN THE POINT OF CUTTING AND ONE OF SAID END TERMINALS OF SAID STRIP; A DIGITALLY CODED STORE, READER MEANS FOR PERIODICALLY READING-OUT DIGITAL CODES FROM SAID STORE, AND FOR GENERATING AND PERIODICALLY VARYING AN ANALOG VOLTAGE IN ACCORDANCE WITH SAID READ-OUT CODES; MEANS FOR COMPARING SAID POTENTIAL DIFFERENCE AND SAID ANALOG VOLTAGE; AND MEANS CONNECTING THE OUTPUT OF SAID VOLTAGE COMPARING MEANS TO CONTROL SAID SECOND DRIVING MEANS.
Claim 2
Dependent Claim
179 words
APPARATUS FOR FORMING A DESIRED TAPER ON A POTENTIOMETER TRACK FORMED OF AN ELONGATED FILM OF RESISTIVE MATERIAL APPLIED TO ONE FACE OF A DIELECTRIC BASE AND HAVING A TERMINAL AT EACH END, AID APPARATUS COMPRISING: A TOOL FOR CUTTING A GROOVE THROUGH THE FILM ONTO THE BASE; FIRST DRIVING MEANS PRODUCING RELATIVE MOVEMENT BETWEEN THE BASE AND SAID TOOL LONGITUDINALLY OF THE STRIP; SECOND DRIVING MEANS FOR MOVING SAID TOOL TRANSVERSELY OF THE TRACK DURING THE OPERATION OF SAID FIRST DRIVING MEANS; MEANS FOR CONNECTING A CONSTANT SOURCE OF CURRENT TO THE END TERMINALS OF THE TRACK DURING OPERATION OF SAID DRIVING MEANS; MEANS FOR DETECTING THE POTENTIAL DIFFERENCE BETWEEN THE POINT OF CUTTING AND ONE OF SAID END TERMINALS OF SAID STRIP; A DIGITALLY CODED STORE, READER MEANS FOR PERIODICALLY READING-OUT DIGITAL CODES FROM SAID STORE, AND FOR GENERATING AND PERIODICALLY VARYING AN ANALOG VOLTAGE IN ACCORDANCE WITH SAID READ-OUT CODES; MEANS FOR COMPARING SAID POTENTIAL DIFFERENCE AND SAID ANALOG VOLTAGE; AND MEANS CONNECTING THE OUTPUT OF SAID VOLTAGE COMPARING MEANS TO CONTROL SAID SECOND DRIVING MEANS.
References Cited (Backward Citations)
US520851A
Cited
US641791A
Cited
US1962438A
Cited
US2759078A
Cited
US2657296A
Cited
US2792620A
Cited
US2827536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |