US3102989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistors
Assignee: Individual
•
Filing: 1960-10-25
•
Granted: 1963-09-03
•
Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Leo A Sielsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:24
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A VARIABLE RESISTOR COMPRISING HOUSING MEANS, A RESISTANCE ELEMENT CARRIED BY SAID HOUSING MEANS, A FLEXIBLE DIAPHRAGM ATTACHED TO SAID HOUSING MEANS OVERLAYING SAID RESISTANCE ELEMENT AND SPACED THEREFROM SO AS TO ENCLOSE SAID RESISTANCE ELEMENT, AN ELECTRO-CONDUCTIVE BALL MOUNTED FOR ROLLING BETWEEN SAID RESISTANCE ELEMENT AND SAID DIAPHRAGM, AN ARM MOUNTED ON SAID HOUSING MEANS FOR MOVEMENT OF ITS FREE END OVER SAID DIAPHRAGM ON THE SIDE OF SAID DIAPHRAGM OPPOSITE TO SAID BALL AND PARALLEL TO SAID RESISTANCE ELEMENT, A FLANGE ON THE FREE END OF SAID ARM DEFINING A CAVITY WITHIN SAID FLANGE, SAID FLANGE PRESSING SAID DIAPHRAGM UPON SAID BALL TO FORM A POCKET CONFINING SAID BALL WHEREBY UPON MOVEMENT OF SAID ARM SAID BALL AND ARM ARE CONSTRAINED TO MOVE AS A UNIT HAVING RELATIVE MOTION WITH RESPECT TO SAID RESISTANCE ELEMENT AND SAID DIAPHRAGM, AN ELECTRIC CIRCUIT CONNECTED TO SAID RESISTANCE ELEMENT, AND A SECOND ELECTRIC CIRCUIT WITH WHICH SAID BALL IS IN CIRCUIT.
Claim 2
Dependent Claim
160 words
A VARIABLE RESISTOR COMPRISING HOUSING MEANS, A RESISTANCE ELEMENT CARRIED BY SAID HOUSING MEANS, A FLEXIBLE DIAPHRAGM ATTACHED TO SAID HOUSING MEANS OVERLAYING SAID RESISTANCE ELEMENT AND SPACED THEREFROM SO AS TO ENCLOSE SAID RESISTANCE ELEMENT, AN ELECTRO-CONDUCTIVE BALL MOUNTED FOR ROLLING BETWEEN SAID RESISTANCE ELEMENT AND SAID DIAPHRAGM, AN ARM MOUNTED ON SAID HOUSING MEANS FOR MOVEMENT OF ITS FREE END OVER SAID DIAPHRAGM ON THE SIDE OF SAID DIAPHRAGM OPPOSITE TO SAID BALL AND PARALLEL TO SAID RESISTANCE ELEMENT, A FLANGE ON THE FREE END OF SAID ARM DEFINING A CAVITY WITHIN SAID FLANGE, SAID FLANGE PRESSING SAID DIAPHRAGM UPON SAID BALL TO FORM A POCKET CONFINING SAID BALL WHEREBY UPON MOVEMENT OF SAID ARM SAID BALL AND ARM ARE CONSTRAINED TO MOVE AS A UNIT HAVING RELATIVE MOTION WITH RESPECT TO SAID RESISTANCE ELEMENT AND SAID DIAPHRAGM, AN ELECTRIC CIRCUIT CONNECTED TO SAID RESISTANCE ELEMENT, AND A SECOND ELECTRIC CIRCUIT WITH WHICH SAID BALL IS IN CIRCUIT.
References Cited (Backward Citations)
US1064722A
Cited
GB261605A
Cited
GB450549A
Cited
US2460795A
Cited
US2457814A
Cited
US2917720A
Cited
US2862088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |