Patent US3582966A successfully refreshed from Google Patents.
US3582966A
Expired / Lapsed
US
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Venting means for circuit breaker arc quencher
Assignee: ITE Imperial Corp
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Filing: 1969-12-30
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Granted: 1971-06-01
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Expires: 1989-12-30
Abstract
Abstract A flexible arc shield or baffle at the rear of the arc chute in a circuit breaker is provided with a support for controlling baffle deflection during arc interruption. The circuit breaker cover in the region adjacent to the arc chute is provided with riblike formations that limit the deflection of the baffle so that it does not block the cover openings covered by deionizing screens. This function is aided by a support plate which limits deflection of the baffle in the direction of arcing gas flow as the gas leaves the arc chute at the rear thereof.
Inventors
- 👤 Albert Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:06
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/34; H01H9/342; H01H2009/343
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
165 words
A circuit interrupter comprising cooperating relatively movable and relatively stationary contacts; operating means to open and close said contacts; an arc chute including a plurality of spaced plates constructed and positioned to receive electric current arcs drawn between said contacts upon separation thereof and assist in extinguishing such arc; a first vent means at the rear of said arc chute to permit gases created by said arcs to escape from said arc chute; housing means wherein said contacts, said operating means and said arc chute are disposed; second vent means formed in said housing anD operatively positioned at the rear of said chute to exhaust said gases from said housing; a flexible baffle means interposed between said first and said second vent means to control flow of said gases therebetween; control means cooperating with said baffle means to direct deflection of said baffle means and limit said deflection to a fully deflected position wherein said baffle means does not close off said second vent means.
Claim 2
Dependent Claim
165 words
A circuit interrupter comprising cooperating relatively movable and relatively stationary contacts; operating means to open and close said contacts; an arc chute including a plurality of spaced plates constructed and positioned to receive electric current arcs drawn between said contacts upon separation thereof and assist in extinguishing such arc; a first vent means at the rear of said arc chute to permit gases created by said arcs to escape from said arc chute; housing means wherein said contacts, said operating means and said arc chute are disposed; second vent means formed in said housing anD operatively positioned at the rear of said chute to exhaust said gases from said housing; a flexible baffle means interposed between said first and said second vent means to control flow of said gases therebetween; control means cooperating with said baffle means to direct deflection of said baffle means and limit said deflection to a fully deflected position wherein said baffle means does not close off said second vent means.
Claim 3
Dependent Claim
41 words
A circuit interrupter as set forth in claim 1, in which said control means includes internal formations of said housing positioned forward of said second vent means to engage and limit deflection of said baffle means to said fully deflected position.
Claim 4
Dependent Claim
66 words
A circuit interrupter as set forth in claim 1, in which said baffle means comprises a sheet member in a plane generally perpendicular to flow of said gases as they exit from said first vent means; means anchoring the lower end of said sheet member; said control means engageable with said baffle means to limit deflection thereof to a direction parallel to direction of said flow.
Claim 5
Dependent Claim
32 words
A circuit interrupter as set forth in claim 3, in which said control means includes a relatively stiff member positioned to engage said sheet member at a region intermediate the ends thereof.
Claim 6
Dependent Claim
32 words
A circuit interrupter as set forth in claim 4, in which said stiff member comprises a sheet at the rear of said sheet member in juxtaposition with substantially the lower half thereof.
Claim 7
Dependent Claim
44 words
A circuit interrupter as set forth in claim 5, in which the arc chute is provided with a generally flat rear wall; said first vent means comprising apertures in said rear wall; the upper edge of said sheet member normally engages said rear wall.
Claim 8
Dependent Claim
41 words
A circuit interrupter as set forth in claim 6, in which said control means includes internal formations of said housing positioned forward of said second vent means to engage and limit deflection of said baffle means to said fully deflected position.
Claim 9
Dependent Claim
19 words
A circuit interrupter as set forth in claim 7, also including deionizing screen means over said second vent means.
Claim 10
Dependent Claim
49 words
A circuit interrupter as set forth in claim 8, in which there is a subassembly comprising said sheet member, said stiff member, a bracket, and means fixedly securing the lower edges of said members to said bracket, said bracket constructed of metal and said members constructed of insulating material.
Claim 11
Dependent Claim
25 words
A circuit breaker as set forth in claim 9, in which there is a common means operatively positioning said arc chute and said baffle means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |