Patent US3185802A successfully refreshed from Google Patents.
US3185802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas blast circuit breakers having at least one tubular contact
Assignee: Merlin Gerin SA
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Filing: 1961-07-18
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Granted: 1965-05-25
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Expires: 1981-07-18
Abstract
No abstract record available.
Inventors
- 👤 Amalric Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:53
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/80; H01H33/82; H01H3/00; H01H3/32; H01H3/52; H01H33/02; H01H33/24; H01H33/28; H01H33/30; H01H33/32; H01H33/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A GAS BLAST CIRCUIT BREAKER COMPRISING IN COMBINATION TWO ALIGNED RELATIVELY MOVABLE ELONGATED CONTACT MEMBERS, AT LEAST ONE OF SAID CONTACT MEMBERS BEING TUBULAR, A PAIR OF SCREEN MEMBERS DEFINING AROUND SAID CONTACT MEMBERS A SUBSTANTIALLY ANNULAR SPACE THROUGH WHICH THE GAS BLAST EXHAUSTS INTO AT LEAST ONE OF SAID CONTACT MEMBERS AT THE MOMENT OF THEIR SEPARATION, MEANS TO BRING SAID SCREEN MEMBERS NEARER TO EACH OTHER JUST BEFORE THE MOMENT OF SEPARATION OF SAID CONTACT MEMBERS, AND MEANS TO BRING SAID SCREEN MEMBERS TO THEIR ORIGINAL RELATIVE POSITION AFTER EXTINCTION OF THE ARC DRAWN BETWEEN SAID CONTACT MEMBERS.
Claim 2
Dependent Claim
100 words
A GAS BLAST CIRCUIT BREAKER COMPRISING IN COMBINATION TWO ALIGNED RELATIVELY MOVABLE ELONGATED CONTACT MEMBERS, AT LEAST ONE OF SAID CONTACT MEMBERS BEING TUBULAR, A PAIR OF SCREEN MEMBERS DEFINING AROUND SAID CONTACT MEMBERS A SUBSTANTIALLY ANNULAR SPACE THROUGH WHICH THE GAS BLAST EXHAUSTS INTO AT LEAST ONE OF SAID CONTACT MEMBERS AT THE MOMENT OF THEIR SEPARATION, MEANS TO BRING SAID SCREEN MEMBERS NEARER TO EACH OTHER JUST BEFORE THE MOMENT OF SEPARATION OF SAID CONTACT MEMBERS, AND MEANS TO BRING SAID SCREEN MEMBERS TO THEIR ORIGINAL RELATIVE POSITION AFTER EXTINCTION OF THE ARC DRAWN BETWEEN SAID CONTACT MEMBERS.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |