Patent US4097220A successfully refreshed from Google Patents.
Patent US3164705A successfully refreshed from Google Patents.
US3164705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-blast circuit interrupters with retractable impedance probe
Assignee: Westinghouse Electric Corp
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Filing: 1961-03-01
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Granted: 1965-01-05
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Expires: 1981-03-01
Abstract
No abstract record available.
Inventors
- 👤 Charles F Cromer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:35
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/80; H01H33/82; H01H33/02; H01H33/04; H01H33/16; H01H33/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A GAS BLAST CIRCUIT INTERRUPTER INCLUDING SEPARABLE MAIN CONTACTS SEPARABLE TO ESTABLISH A MAIN CURRENT ARC, A GAS BLAST ACTUATED IMPEDANCE PROBE ASSEMBLY INCLUDING A RETRACTABLE PROBE AND A SHUTTING IMPEDANCE CONNECTED THEREWITH, GAS BLAST MEANS FOR NOT ONLY EFFECTING EXTINCTION OF THE MAIN CURRENT ARC BUT ALSO ACTUATION OF THE PROBE ASSEMBLY TO INSERT THE IMPEDANCE IN SHUNT RELATIONSHIP ACROSS THE MAIN CURRENT ARC, AND SAID RETRACTABLE PROBE BEING OUT OF PROXIMITY OF THE REGION BETWEEN THE SEPARABLE MAIN CONTACTS DURING THE CLOSING STROKE OF THE INTERRUPTER.
Claim 2
Dependent Claim
88 words
A GAS BLAST CIRCUIT INTERRUPTER INCLUDING SEPARABLE MAIN CONTACTS SEPARABLE TO ESTABLISH A MAIN CURRENT ARC, A GAS BLAST ACTUATED IMPEDANCE PROBE ASSEMBLY INCLUDING A RETRACTABLE PROBE AND A SHUTTING IMPEDANCE CONNECTED THEREWITH, GAS BLAST MEANS FOR NOT ONLY EFFECTING EXTINCTION OF THE MAIN CURRENT ARC BUT ALSO ACTUATION OF THE PROBE ASSEMBLY TO INSERT THE IMPEDANCE IN SHUNT RELATIONSHIP ACROSS THE MAIN CURRENT ARC, AND SAID RETRACTABLE PROBE BEING OUT OF PROXIMITY OF THE REGION BETWEEN THE SEPARABLE MAIN CONTACTS DURING THE CLOSING STROKE OF THE INTERRUPTER.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |