Patent US3320380A successfully refreshed from Google Patents.
US3320380A
Expired / Lapsed
US
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Circuit interrupter with an improved contact structure
Assignee: Westinghouse Electric Corp
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Filing: 1965-06-24
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Granted: 1967-05-16
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Expires: 1985-06-24
Abstract
No abstract record available.
Inventors
- 👤 John N Groves
- 👤 Howard E Reichert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:48
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/50; H01H71/52; H01H71/522; H01H71/524; H01H71/12; H01H71/14; H01H71/16; H01H71/162; H01H71/74; H01H71/7409; H01H71/7427; H01H71/7436; H01H73/00; H01H73/02; H01H73/12; H01H73/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A CIRCUIT BREAKER COMPRISING STATIONARY CONTACT MEANS, A MOVABLE CONTACT MEMBER COMPRISING A GENERALLY FLAT PLATE HAVING CONTACT MEANS AT ONE END THEREOF, TWO GENERALLY PARALLEL TRACK SURFACES, SAID TRACK SURFACES ENGAGING OPPOSITELY DISPOSED END SURFACES OF SAID PLATE TO GUIDE SAID PLATE, MEANS OPERABLE TO MOVE SAID PLATE BETWEEN SAID TRACK SURFACES INTO AND OUT OF ENGAGEMENT WITH SAID STATIONARY CONTACT MEANS, AND SAID OPPOSITELY DISPOSED END SURFACES OF SAID PLATE BEING CURVED SURFACES TO PERMIT SAID PLATE TO ROCK IN THE PLANES OF ITS LARGEST FLAT SURFACES.
Claim 2
Dependent Claim
89 words
A CIRCUIT BREAKER COMPRISING STATIONARY CONTACT MEANS, A MOVABLE CONTACT MEMBER COMPRISING A GENERALLY FLAT PLATE HAVING CONTACT MEANS AT ONE END THEREOF, TWO GENERALLY PARALLEL TRACK SURFACES, SAID TRACK SURFACES ENGAGING OPPOSITELY DISPOSED END SURFACES OF SAID PLATE TO GUIDE SAID PLATE, MEANS OPERABLE TO MOVE SAID PLATE BETWEEN SAID TRACK SURFACES INTO AND OUT OF ENGAGEMENT WITH SAID STATIONARY CONTACT MEANS, AND SAID OPPOSITELY DISPOSED END SURFACES OF SAID PLATE BEING CURVED SURFACES TO PERMIT SAID PLATE TO ROCK IN THE PLANES OF ITS LARGEST FLAT SURFACES.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |