US3291948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orifice structure for compressed gas-circuit interrupter
Assignee: Westinghouse Electric Corp
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Filing: 1964-08-06
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Granted: 1966-12-13
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Expires: 1984-08-06
Abstract
No abstract record available.
Inventors
- 👤 James M Telford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:04
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/22; H01H33/70; H01H33/7015; H01H33/7023; H01H33/703
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A SINGLE ORIFICE STRUCTURE FOR A GAS-BLAST CIRCUIT INTERRUPTER INCLUDING A GENERALLY CYLINDRICALLY-SHAPED INSULATING MEMBER HAVING A RESTRICTED ORIFICE OPENING INTERMEDIATE THE ENDS THEREOF, LATERAL OPEN VENTING MEANS IN THE SIDE WALL OF THE ORIFICE STRUCTURE ON THE DOWNSTREAM SIDE OF THE RESTRICTED ORIFICE OPENING COMPRISING AT LEAST FOUR UNIFORMLY-SPACED LATERAL VENTS, SAID VENTING MEANS BEING DISPOSED IN IMMEDIATE PROXIMITY TO THE RESTRICTED ORIFICE OPENING, AND THE LATERAL OPEN VENTING AREA BEING SUBSTANTIALLY ONE-HALF THAT OF THE RESTRICTED ORIFICE OPENING.
Claim 2
Dependent Claim
80 words
A SINGLE ORIFICE STRUCTURE FOR A GAS-BLAST CIRCUIT INTERRUPTER INCLUDING A GENERALLY CYLINDRICALLY-SHAPED INSULATING MEMBER HAVING A RESTRICTED ORIFICE OPENING INTERMEDIATE THE ENDS THEREOF, LATERAL OPEN VENTING MEANS IN THE SIDE WALL OF THE ORIFICE STRUCTURE ON THE DOWNSTREAM SIDE OF THE RESTRICTED ORIFICE OPENING COMPRISING AT LEAST FOUR UNIFORMLY-SPACED LATERAL VENTS, SAID VENTING MEANS BEING DISPOSED IN IMMEDIATE PROXIMITY TO THE RESTRICTED ORIFICE OPENING, AND THE LATERAL OPEN VENTING AREA BEING SUBSTANTIALLY ONE-HALF THAT OF THE RESTRICTED ORIFICE OPENING.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |