Patent US3090895A successfully refreshed from Google Patents.
US3090895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitors
Assignee: BRITISH DIELECTRIC RES Ltd
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Filing: 1959-02-16
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Granted: 1963-05-21
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Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Hall Michael Maurice James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/20; H01G4/00; H01G4/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A WOUND CAPACITOR HAVING TWO AXIALLY STAGGERED CONVOLUTE ELECTRODES, EACH FORMED OF A SHEET OF A MATERIAL HAVING A ELECTRICALLY CONDUCTIVE SURFACE SELECTED FROM THE GROUP OF SUCH SHEET MATERIALS CONSISTING OF METAL FOIL, METALLIZED PAPER AND METALLIZED PLASTICS FILM, AND HAVING EVERY RAW EDGE OF BOTH ELECTRODES LYING OUTSIDE THE ELECTRIC FIELD OF THE CAPACITOR, IN WHICH ONE LONGITUDINAL RAW EDGE OF ONE ELECTRODE PROTRUDES FROM ONE END FACE OF THE ROLL, ONE LONGITUDINAL RAW EDGE OF THE OTHER ELECTRODE PROTRUDES FROM THE OTHER END FACE OF THE ROLL, THE OTHER LONGITUDINAL RAW EDGE OF EACH ELECTRODE LIES WITHIN THE ROLL EACH SHEET BEING FOLDED ALONG A LINE EXTENDING LENGTHWISE OF AND NEAR TO THE LONGITUDINAL RAW EDGE LYING WITHIN THE ROLL AND ALONG A SECOND LINE EXTENDING LENGTHWISE OF AND SPACED FURTHER FROM SAID RAW EDGE TO CAUSE THAT SAME RAW EDGE TO LIE BETWEEN TWO OVERLYING PARTS OF THE SAME ELECTRODE AND BE SCREENED THEREBY, AND AT LEAST ONE OF THE ELECTRODES IS FOLDED AT AN ANGLE OF ABOUT 45* TO ITS LONGITUDINAL EDGES AT LEAST ONE OF ITS ENDS SO THAT SAID PROTRUDES FROM THE SAME END FACE OF THE ROLL AS THE PROTRUDING LONGITUDINAL EDGES OF THE ELECTRODE.
Claim 2
Dependent Claim
203 words
A WOUND CAPACITOR HAVING TWO AXIALLY STAGGERED CONVOLUTE ELECTRODES, EACH FORMED OF A SHEET OF A MATERIAL HAVING A ELECTRICALLY CONDUCTIVE SURFACE SELECTED FROM THE GROUP OF SUCH SHEET MATERIALS CONSISTING OF METAL FOIL, METALLIZED PAPER AND METALLIZED PLASTICS FILM, AND HAVING EVERY RAW EDGE OF BOTH ELECTRODES LYING OUTSIDE THE ELECTRIC FIELD OF THE CAPACITOR, IN WHICH ONE LONGITUDINAL RAW EDGE OF ONE ELECTRODE PROTRUDES FROM ONE END FACE OF THE ROLL, ONE LONGITUDINAL RAW EDGE OF THE OTHER ELECTRODE PROTRUDES FROM THE OTHER END FACE OF THE ROLL, THE OTHER LONGITUDINAL RAW EDGE OF EACH ELECTRODE LIES WITHIN THE ROLL EACH SHEET BEING FOLDED ALONG A LINE EXTENDING LENGTHWISE OF AND NEAR TO THE LONGITUDINAL RAW EDGE LYING WITHIN THE ROLL AND ALONG A SECOND LINE EXTENDING LENGTHWISE OF AND SPACED FURTHER FROM SAID RAW EDGE TO CAUSE THAT SAME RAW EDGE TO LIE BETWEEN TWO OVERLYING PARTS OF THE SAME ELECTRODE AND BE SCREENED THEREBY, AND AT LEAST ONE OF THE ELECTRODES IS FOLDED AT AN ANGLE OF ABOUT 45* TO ITS LONGITUDINAL EDGES AT LEAST ONE OF ITS ENDS SO THAT SAID PROTRUDES FROM THE SAME END FACE OF THE ROLL AS THE PROTRUDING LONGITUDINAL EDGES OF THE ELECTRODE.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |