US3787712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug-on circuit breaker mounting device pluggable onto a bus bar stack for relatively large plug-on circuit breakers and including means for mounting relatively small plug-on circuit breakers not pluggable directly onto the bus bar stack
Assignee: Schneider Electric USA Inc
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Filing: 1972-10-17
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Granted: 1974-01-22
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Expires: 1992-10-17
Abstract
Abstract An electrical switchboard includes an enclosure and a plurality of flat bus bars arranged in a stack with flat sides parallel to a rear wall of the enclosure. Power is supplied to the bus bars through a main circuit breaker and fed to relatively large loads through relatively large circuit breakers pluggable onto the edges of the bus bars. Relatively small loads are fed through relatively small circuit breakers mountable on a mounting device which can be plugged onto the edges of the bus bars.
Inventors
- 👤 R Diersing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/04; H02B1/056; H02B1/20; H02B1/21
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
145 words
An assembly comprising a switchboard having a plurality of flat bus bars aligned flatwise in a stack and spaced to receive plug-on jaws of relatively large circuit breakers and a plug-on mounting device for relatively small circuit breakers not suitable for plugging directly onto the bus bars of the switchboard, the plug-on mounting device comprising a plurality of main buses each having a smaller curRent capacity than each of said switchborad bus bars, each of the main buses having a plurality of branch buses and each of the branch buses receiving plug-on jaws of a relatively small circuit breaker, a plurality of pairs of plug-on jaws on said mounting device spaced from each other in one direction correspondingly to the spacing of the bus bars of the switchboard and plugged thereon, and means electrically connecting the pairs of plug-on jaws respectively to the main buses.
Claim 2
Dependent Claim
145 words
An assembly comprising a switchboard having a plurality of flat bus bars aligned flatwise in a stack and spaced to receive plug-on jaws of relatively large circuit breakers and a plug-on mounting device for relatively small circuit breakers not suitable for plugging directly onto the bus bars of the switchboard, the plug-on mounting device comprising a plurality of main buses each having a smaller curRent capacity than each of said switchborad bus bars, each of the main buses having a plurality of branch buses and each of the branch buses receiving plug-on jaws of a relatively small circuit breaker, a plurality of pairs of plug-on jaws on said mounting device spaced from each other in one direction correspondingly to the spacing of the bus bars of the switchboard and plugged thereon, and means electrically connecting the pairs of plug-on jaws respectively to the main buses.
Claim 3
Dependent Claim
21 words
A plug-on mounting device as claimed in claim 1 including a shroud of insulating material for the pairs of plug-on jaws.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |