Patent US3237141A successfully refreshed from Google Patents.
US3237141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor construction
Assignee: Individual
•
Filing: 1963-08-26
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Granted: 1966-02-22
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Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Marlan E Bourns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:54
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40; H01C10/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A VARIABLE RESISTOR COMPRISING A HOUSING HAVING A BODY, A RESISTANCE ELEMENT MOUNTED ON SAID BODY, A THREADED LEADSCREW ROTATABLY SUPPORTED ON SAID BODY PARALLEL TO SAID RESISTANCE ELEMENT, A SLIDER MOUNTED ON SAID LEADSCREW AND FREELY MOVABLE ALONG THE LENGTH THEREOF, MEANS FOR PROVIDING A YIELDABLE DRIVING CONNECTION BETWEEN SAID LEADSCREW AND SAID SLIDER INCLUDING SPRING MEANS HAVING SPACED-APART PORTIONS EACH ENGAGING THE THREAD OF SAID LEADSCREW AT A RESPECTIVE ONE OF TWO LONGITUDINALLY SPACED-APART LOCATIONS ALONG THE LEADSCREW WHEREBY SAID SLIDER AND SPRING MEANS ARE MOVED PARALLEL TO AND ADJACENT TO SAID RESISTANCE ELEMENT
Claim 2
Dependent Claim
96 words
A VARIABLE RESISTOR COMPRISING A HOUSING HAVING A BODY, A RESISTANCE ELEMENT MOUNTED ON SAID BODY, A THREADED LEADSCREW ROTATABLY SUPPORTED ON SAID BODY PARALLEL TO SAID RESISTANCE ELEMENT, A SLIDER MOUNTED ON SAID LEADSCREW AND FREELY MOVABLE ALONG THE LENGTH THEREOF, MEANS FOR PROVIDING A YIELDABLE DRIVING CONNECTION BETWEEN SAID LEADSCREW AND SAID SLIDER INCLUDING SPRING MEANS HAVING SPACED-APART PORTIONS EACH ENGAGING THE THREAD OF SAID LEADSCREW AT A RESPECTIVE ONE OF TWO LONGITUDINALLY SPACED-APART LOCATIONS ALONG THE LEADSCREW WHEREBY SAID SLIDER AND SPRING MEANS ARE MOVED PARALLEL TO AND ADJACENT TO SAID RESISTANCE ELEMENT
References Cited (Backward Citations)
US1692962A
Cited
GB668186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |