US3233200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable resistor
Assignee: Weston Instruments Inc
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Filing: 1962-09-28
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Granted: 1966-02-01
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Bebel Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:29
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
AN ADJUSTABLE RESISTOR COMPRISING: A TUBULAR RESISTIVE ELEMENT; AN ELECTRICALLY CONDUCTIVE TOROIDAL COIL ADAPTED TO CONTACT THE SURFACE OF THE RESISTIVE ELEMENT; AND MEANS FOR MOVING THE TOROIDAL COIL AXIALLY ALONG THE RESISTIVE ELEMENT WHILE MAINTAINING THE PLANE OF THE TOROID DEFINED BY SUCH COIL AT AN ACUTE ANGLE WITH RESPECT TO THE AXIS OF THE RESISTIVE ELEMENT.
Claim 2
Dependent Claim
58 words
AN ADJUSTABLE RESISTOR COMPRISING: A TUBULAR RESISTIVE ELEMENT; AN ELECTRICALLY CONDUCTIVE TOROIDAL COIL ADAPTED TO CONTACT THE SURFACE OF THE RESISTIVE ELEMENT; AND MEANS FOR MOVING THE TOROIDAL COIL AXIALLY ALONG THE RESISTIVE ELEMENT WHILE MAINTAINING THE PLANE OF THE TOROID DEFINED BY SUCH COIL AT AN ACUTE ANGLE WITH RESPECT TO THE AXIS OF THE RESISTIVE ELEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |