Patent US2961101A successfully refreshed from Google Patents.
Patent US3239790A successfully refreshed from Google Patents.
US3239790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Potentiometer
Assignee: Dale Electronics Inc
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Filing: 1963-01-21
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Granted: 1966-03-08
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Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Michael C Layland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:55
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40; H01C10/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
IN A POTENTIOMETER, A HOUSING COMPRISING A FIRST AND SECOND CASING IN MATING RELATIONSHIP FORMING A COMPARTMENT THEREBETWEEN, A COLLECTOR BAR CARRIED IN SAID COMPARTMENT BY THE FIRST OF SAID CASINGS, A CYLINDRICAL RESISTANCE COIL CARRIED IN SAID COMPARTMENT BY THE SECOND OF SAID CASINGS, A LEAD SCREW IN SAID FIRST CASING, A WIPER BLOCK MOVABLY MOUNTED ON SAID LEAD SCREW, A WIPER ELEMENT CARRIED BY SAID WIPER BLOCK AND COMPRISING SEPARATE WIPER ARMS OF SPRING MATERIAL FOR ENGAGEMENT WITH SAID COLLECTOR BAR AND SAID RESISTANCE COIL, SAID WIPER ARMS LYING IN PLANES SUBSTANTIALLY PERPENDICULAR TO THE OTHER, SAID COLLECTOR BAR IS POSITIONED IN A LONGITUDINAL DEPRESSION IN SAID FIRST CASING AND SAID RESISTANCE COIL IS POSITIONED ON A LONGITUDINAL SHOULDER IN SAID SECOND CASING, AND A LONGITUDINAL SHOULDER IN SAID FIRST CASING IN ENGAGEMENT WITH SAID RESISTANCE COIL AND BEING LOCATED FACING SAID SHOULDER ON SAID SECOND CASING AND SAID WIPER ARM ENGAGING AND BIASING SAID RESISTANCE COIL INTO ENGAGEMENT WITH SAID SHOULDER WHEREBY SUPPORT IS PROVIDED FOR SAID RESISTANCE COIL AT AT LEAST THREE SPACED APART AREAS AROUND THE PERIPHERY OF SAID COIL.
Claim 2
Dependent Claim
185 words
IN A POTENTIOMETER, A HOUSING COMPRISING A FIRST AND SECOND CASING IN MATING RELATIONSHIP FORMING A COMPARTMENT THEREBETWEEN, A COLLECTOR BAR CARRIED IN SAID COMPARTMENT BY THE FIRST OF SAID CASINGS, A CYLINDRICAL RESISTANCE COIL CARRIED IN SAID COMPARTMENT BY THE SECOND OF SAID CASINGS, A LEAD SCREW IN SAID FIRST CASING, A WIPER BLOCK MOVABLY MOUNTED ON SAID LEAD SCREW, A WIPER ELEMENT CARRIED BY SAID WIPER BLOCK AND COMPRISING SEPARATE WIPER ARMS OF SPRING MATERIAL FOR ENGAGEMENT WITH SAID COLLECTOR BAR AND SAID RESISTANCE COIL, SAID WIPER ARMS LYING IN PLANES SUBSTANTIALLY PERPENDICULAR TO THE OTHER, SAID COLLECTOR BAR IS POSITIONED IN A LONGITUDINAL DEPRESSION IN SAID FIRST CASING AND SAID RESISTANCE COIL IS POSITIONED ON A LONGITUDINAL SHOULDER IN SAID SECOND CASING, AND A LONGITUDINAL SHOULDER IN SAID FIRST CASING IN ENGAGEMENT WITH SAID RESISTANCE COIL AND BEING LOCATED FACING SAID SHOULDER ON SAID SECOND CASING AND SAID WIPER ARM ENGAGING AND BIASING SAID RESISTANCE COIL INTO ENGAGEMENT WITH SAID SHOULDER WHEREBY SUPPORT IS PROVIDED FOR SAID RESISTANCE COIL AT AT LEAST THREE SPACED APART AREAS AROUND THE PERIPHERY OF SAID COIL.
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |