US3290469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed-gas circuit interrupter having cavitation means
Assignee: Westinghouse Electric Corp
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Filing: 1964-09-30
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Granted: 1966-12-06
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Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Winthrop M Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:15
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/28; H01H33/30; H01H33/32; H01H33/70; H01H33/7015; H01H33/7038; H01H33/80; H01H33/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPRESSED-GAS CIRCUIT INTERRUPTER INCLUDING MEANS DEFINING AN ENCLOSED CASING CONTAINING GAS UNDER PRESSURE, A RELATIVELY STATIONARY CONTACT AND A COOPERABLE MOVABLE TUBULAR VENTING CONTACT DISPOSED WITHIN SAID ENCLOSED CASING, AND MEANS CAUSING A CAVITATION EFFECT DOWNSTREAM OF THE MOVABLE TUBULAR VENTING CONTACT TO CAUSE THEREBY GAS FLOW THROUGH THE MOVABLE TUBULAR VENTING CONTACT TO CAUSE ARC EXTINCTION.
Claim 2
Dependent Claim
58 words
A COMPRESSED-GAS CIRCUIT INTERRUPTER INCLUDING MEANS DEFINING AN ENCLOSED CASING CONTAINING GAS UNDER PRESSURE, A RELATIVELY STATIONARY CONTACT AND A COOPERABLE MOVABLE TUBULAR VENTING CONTACT DISPOSED WITHIN SAID ENCLOSED CASING, AND MEANS CAUSING A CAVITATION EFFECT DOWNSTREAM OF THE MOVABLE TUBULAR VENTING CONTACT TO CAUSE THEREBY GAS FLOW THROUGH THE MOVABLE TUBULAR VENTING CONTACT TO CAUSE ARC EXTINCTION.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |