Patent US3796922A successfully refreshed from Google Patents.
US3796922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enclosed switchgear with improved insulating support means
Assignee: Westinghouse Electric Corp
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Filing: 1972-08-24
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Granted: 1974-03-12
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Expires: 1992-08-24
Abstract
Abstract The herein disclosed enclosed switchgear comprises an enclosure and switchgear supported in the enclosure with efficient utilization of the available space within the enclosure. A fuse clip terminal connector is constructed and arranged to enable the positioning of a fuse close to an end wall of the enclosure. Two enclosed circuit interrupters are constructed and arranged to efficiently utilize available space and to provide adequate insulation between adjacent line terminal conductors. An improved cover interlock is provided to releasably lock the cover closed when the circuit interrupter is closed and to prevent closing of the circuit interrupter when the cover is only partially closed.
Inventors
- 👤 S Mrenna
- 👤 G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:53
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/26; H02B1/46; H02B1/48; H01; H01H; H01H9/00; H01H9/20; H01H9/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
209 words
Enclosed switchgear comprising a receptacle and a pair of multi-pole circuit interrupters supported in the receptacle, each of said circuit interrupters comprising an insulating support member and a circuit interrupter structure on the insulating support member, each of said circuit interrupter structuRes comprising a pair of cooperating contacts and means operable to open and close the contacts, each of said insulating support members having a line end and a load end and being formed with a separate pole unit cavity at the line end thereof for each pole unit thereof with insulating barrier means between adjacent pole units and with each cavity being open at the front and open at the line end of the support member, said insulating support members at the line ends thereof being formed with cooperating mating end formations, said insulating support members being supported in said receptacle in a close end-to-end relationship at the line ends thereof with said pole unit cavities providing common pole unit cavities and with said cooperating mating end formations mating thereby providing a tortuous path between adjacent common pole unit cavities, and a separate common line terminal conductor in each of said common pole unit cavities connected to the associated pole unit contacts of both of said circuit interrupters.
Claim 2
Dependent Claim
209 words
Enclosed switchgear comprising a receptacle and a pair of multi-pole circuit interrupters supported in the receptacle, each of said circuit interrupters comprising an insulating support member and a circuit interrupter structure on the insulating support member, each of said circuit interrupter structuRes comprising a pair of cooperating contacts and means operable to open and close the contacts, each of said insulating support members having a line end and a load end and being formed with a separate pole unit cavity at the line end thereof for each pole unit thereof with insulating barrier means between adjacent pole units and with each cavity being open at the front and open at the line end of the support member, said insulating support members at the line ends thereof being formed with cooperating mating end formations, said insulating support members being supported in said receptacle in a close end-to-end relationship at the line ends thereof with said pole unit cavities providing common pole unit cavities and with said cooperating mating end formations mating thereby providing a tortuous path between adjacent common pole unit cavities, and a separate common line terminal conductor in each of said common pole unit cavities connected to the associated pole unit contacts of both of said circuit interrupters.
Claim 3
Dependent Claim
58 words
Enclosed switchgear according to claim 1, each of said common pole unit cavities being open at the front and open at the back thereof, and each of said common line terminal conductors being adapted to receive connection thereto of a conducting member that may be brought in through the open back of the associated common pole unit cavity.
Claim 4
Dependent Claim
85 words
Enclosed switchgear according to claim 2, each of said common line terminal conductors having an opening therein for receiving a mounting bolt that may be passed from the front of said associated pole unit cavity through the opening and threaded into a conductor that may be passed up through the open back of the associated common pole unit cavity to be electrically connected to the common line terminal conductor by means of said bolt which may be threaded into a tapped opening in the conductor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |