Patent US3555484A successfully refreshed from Google Patents.
US3555484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fine adjustment variable resistor
Assignee: Stackpole Carbon Co
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Filing: 1969-05-16
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Granted: 1971-01-12
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Expires: 1989-05-16
Abstract
Abstract A SLIDE IS DISPOSED IN A LONGITUDINAL SLOT IN ONE WALL OF A CASE, IN WHICH THERE ARE PARALLEL RESISTANCE AND COLLECTOR ELEMENTS. THE SLIDE CARRIES A BRIDGING CONTACT ENGAGING BOTH ELEMENTS, AND IS PROVIDED WITH A PASSAGE EXTENDING INWARDLY AT LEAST AS FOR AS THE SLOT. ROTATABLY MOUNTED IN THIS PASSAGE IS A SHAFT, THE INNER END OF WHICH IS PRESSED AGAINST THE CASE AT ONLY ONE SIDE OF THE SLOT. A KNOB ON THE OUTER END OF THE SHAFT TURNS IT SO THAT THE FRICTION OF THE SHAFT AGAINST THE CASE WILL CAUSE THE SLIDE TO MOVE ALONG THE SLOT.
Inventors
- 👤 Mogens W Bang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:55
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40; H01C10/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |