US3236978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangements in polyphase modular vacuum switches having common operating means
Assignee: Allis Chalmers Corp
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Filing: 1962-04-02
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Granted: 1966-02-22
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 George N Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:15
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/022; H01H3/00; H01H3/22; H01H3/30; H01H3/32; H01H3/46; H01H33/60; H01H33/66; H01H33/666
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A POLYPHASE CIRCUIT BREAKER COMPRISING AT LEAST A PAIR OF INTERCONNECTED CIRCUIT INTERRUPTING DEVICES FOR EACH PHASE, EACH OF SAID DEVICES BEING MOUNTED WITHIN A VACUUMIZED ENVELOPE AND COMPRISING A PAIR OF COOPERATING SEPARABLE CONTACTS, ONE OF SAID CONTACTS OF EACH OF SAID PAIRS OF CONTACTS BEING SUPPORTED FOR MOVEMENT IN DIRECTIONS INWARDLY AND OUTWARDLY OF SAID ENVELOPE, A SINGLE COLUMN INSULATING MEANS FOR SUPPORTING EACH OF SAID DEVICES OF EACH OF SAID PHASES, SAID DEVICES OF EACH OF SAID PHASES HAVING THEIR LONGITUDINAL AXES ARRANGED TRANSVERSELY TO EACH OTHER, AND MEANS COMMON TO ALL OF SAID DEVICES FOR OPERATING SAID MOVABLE CONTACTS.
Claim 2
Dependent Claim
103 words
A POLYPHASE CIRCUIT BREAKER COMPRISING AT LEAST A PAIR OF INTERCONNECTED CIRCUIT INTERRUPTING DEVICES FOR EACH PHASE, EACH OF SAID DEVICES BEING MOUNTED WITHIN A VACUUMIZED ENVELOPE AND COMPRISING A PAIR OF COOPERATING SEPARABLE CONTACTS, ONE OF SAID CONTACTS OF EACH OF SAID PAIRS OF CONTACTS BEING SUPPORTED FOR MOVEMENT IN DIRECTIONS INWARDLY AND OUTWARDLY OF SAID ENVELOPE, A SINGLE COLUMN INSULATING MEANS FOR SUPPORTING EACH OF SAID DEVICES OF EACH OF SAID PHASES, SAID DEVICES OF EACH OF SAID PHASES HAVING THEIR LONGITUDINAL AXES ARRANGED TRANSVERSELY TO EACH OTHER, AND MEANS COMMON TO ALL OF SAID DEVICES FOR OPERATING SAID MOVABLE CONTACTS.
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |