US3213222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switchgear shutter
Assignee: Westinghouse Electric Corp
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Filing: 1963-04-12
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Granted: 1965-10-19
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Expires: 1983-04-12
Abstract
No abstract record available.
Inventors
- 👤 James D Finley
- 👤 Russell E Frink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:29
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A SWITCHGEAR APPARATUS COMPRISING AT LEAST TWO COMPARTMENTS, A PARTITION MEMBER DISPOSED BETWEEN SAID COMPARTMENTS, SAID PARTITION MEMBER HAVING AT LEAST ONE PAIR OF SPACED OPENINGS THERETHROUGH, A FIRST SHUTTER DISPOSED ADJACENT TO SAID PARTITION AND HAVING AT LEAST ONE OPENING ASSOCIATED WITH EACH PAIR OF SPACED OPENINGS AND DISPOSED TO SUBSTANTIALLY COINCIDE WITH ONE OF SAID PAIR OF OPENINGS IN A FIRST POSITION, THE OPENING OF SAID FIRST SHUTTER BEING DISPOSED TO OVERLAP ONLY THE OTHER OPENING OF SAID PAIR OF OPENINGS IN A SECOND POSITION, A SECOND SHUTTER DISPOSED ADJACENT TO SAID FIRST SHUTTER TO CLOSE ONLY THE OVERLAPPING PORTIONS OF SAID OPENINGS IN THE SECOND POSITION OF SAID FIRST SHUTTER, AND MEANS FOR ACTUATING BOTH OF SAID SHUTTERS BETWEEN SAID PORTIONS IN ONLY A SINGLE DIRECTION AT A TIME.
Claim 2
Dependent Claim
132 words
A SWITCHGEAR APPARATUS COMPRISING AT LEAST TWO COMPARTMENTS, A PARTITION MEMBER DISPOSED BETWEEN SAID COMPARTMENTS, SAID PARTITION MEMBER HAVING AT LEAST ONE PAIR OF SPACED OPENINGS THERETHROUGH, A FIRST SHUTTER DISPOSED ADJACENT TO SAID PARTITION AND HAVING AT LEAST ONE OPENING ASSOCIATED WITH EACH PAIR OF SPACED OPENINGS AND DISPOSED TO SUBSTANTIALLY COINCIDE WITH ONE OF SAID PAIR OF OPENINGS IN A FIRST POSITION, THE OPENING OF SAID FIRST SHUTTER BEING DISPOSED TO OVERLAP ONLY THE OTHER OPENING OF SAID PAIR OF OPENINGS IN A SECOND POSITION, A SECOND SHUTTER DISPOSED ADJACENT TO SAID FIRST SHUTTER TO CLOSE ONLY THE OVERLAPPING PORTIONS OF SAID OPENINGS IN THE SECOND POSITION OF SAID FIRST SHUTTER, AND MEANS FOR ACTUATING BOTH OF SAID SHUTTERS BETWEEN SAID PORTIONS IN ONLY A SINGLE DIRECTION AT A TIME.
References Cited (Backward Citations)
GB881704A
Cited
US3121144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |