Patent US3175134A successfully refreshed from Google Patents.
US3175134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable capacitor
Assignee: —
•
Filing: —
•
Granted: 1965-03-23
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Expires: 1982-03-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:33
CPC Classifications
H; H01; H01G; H01G5/00; H01G5/01; H01G5/013; H01G5/0134; H01G5/0138
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A VARIABLE CAPACITOR COMPRISING, IN COMBINATION, A PLURALITY OF ROTOR AND STATOR SETS; A COMMON SHAFT FOR ALL ROTORS, EACH ROTOR AND STATOR SET BEING PROVIDED WITH A PAIR OF MUTUALLY OPPOSED ELECTRODES; AND A THIN CERAMIC PLATE INTERPOSED THEREBETWEEN; MEANS FOR MAINTAINING CONSTANT POSITIVE PRESSURE BETWEEN EACH ROTOR AND STATOR; MEANS FOR POSITIVELY LOCKING SAID ROTORS TO SAID SHAFT, SAID MEANS COMPRISING A PLURALITY OF DEPRESSIONS IN THE OUTER FLAT SURFACE OF AT LEAST ONE OF THE ROTORS, A FASTENING MEMBER LOCKABLE ON SAID SHAFT AND HAVING A PLURALITY OF LEGS CORRESPONDING IN NUMBER TO THAT OF SAID DEPRESSIONS AND PROVIDED WITH BENT TIPS, SAID TIPS BEING FIXED IN SAID DEPRESSIONS, SAID DEPRESSIONS BEING SUFFICIENTLY LARGE RELATIVE TO SAID BENT TIPS TO PERMIT, AT THE TIME OF ASSEMBLY OF THE CAPACITOR, PREADJUSTMENT OF THE SETTING OF THE ROTORS RELATIVE TO THE SHAFT SO AS TO CAUSE THE CAPACITANCES OF ALL ROTOR-SHAFT SETS TO BE EQUAL FOR ANY ANGLE OF ROTATION OF THE SHAFT.
Claim 2
Dependent Claim
164 words
A VARIABLE CAPACITOR COMPRISING, IN COMBINATION, A PLURALITY OF ROTOR AND STATOR SETS; A COMMON SHAFT FOR ALL ROTORS, EACH ROTOR AND STATOR SET BEING PROVIDED WITH A PAIR OF MUTUALLY OPPOSED ELECTRODES; AND A THIN CERAMIC PLATE INTERPOSED THEREBETWEEN; MEANS FOR MAINTAINING CONSTANT POSITIVE PRESSURE BETWEEN EACH ROTOR AND STATOR; MEANS FOR POSITIVELY LOCKING SAID ROTORS TO SAID SHAFT, SAID MEANS COMPRISING A PLURALITY OF DEPRESSIONS IN THE OUTER FLAT SURFACE OF AT LEAST ONE OF THE ROTORS, A FASTENING MEMBER LOCKABLE ON SAID SHAFT AND HAVING A PLURALITY OF LEGS CORRESPONDING IN NUMBER TO THAT OF SAID DEPRESSIONS AND PROVIDED WITH BENT TIPS, SAID TIPS BEING FIXED IN SAID DEPRESSIONS, SAID DEPRESSIONS BEING SUFFICIENTLY LARGE RELATIVE TO SAID BENT TIPS TO PERMIT, AT THE TIME OF ASSEMBLY OF THE CAPACITOR, PREADJUSTMENT OF THE SETTING OF THE ROTORS RELATIVE TO THE SHAFT SO AS TO CAUSE THE CAPACITANCES OF ALL ROTOR-SHAFT SETS TO BE EQUAL FOR ANY ANGLE OF ROTATION OF THE SHAFT.
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |