Patent US3600539A successfully refreshed from Google Patents.
US3600539A
Expired / Lapsed
US
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Multipole circuit interrupter
Assignee: Westinghouse Electric Corp
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Filing: 1969-09-17
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Granted: 1971-08-17
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Expires: 1989-09-17
Abstract
Abstract A multipole circuit interrupter, having an elongated metal-core tie bar supporting the plurality of movable contact arm structures, comprises improved means supporting the tie bar for pivotal movement with insulating means preventing a phase-tophase fault through the metal core.
Inventors
- 👤 Eugene J Walker
- 👤 Donald G Portman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:37
CPC Classifications
H; H01; H01H; H01H73/00; H01H73/02; H01H73/04; Y; Y10; Y10S; Y10S200/00; Y10S200/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
176 words
A multipole circuit interrupter comprising an insulating housing, a circuit interrupter mechanism supported in said insulating housing, said circuit interrupter mechanism comprising a stationary contact for each pole, a movable contact arm structure for each pole cooperating with the associated stationary contact, an elongated tie bar common to all of said poles, said movable contact arm structures being supported on said tie bar for simultaneous movement with said tie bar, said tie bar comprising a rigid metal bar and an insulating cover on said metal bar, support means supporting said tie bar for pivotal movement about the elongated axis thereof, said tie bar at at least one end thereof comprising a metal support pin, an insulating bearing having an opening therein receiving said support pin for pivotal movement in said opening, a support surface on said housing engaging said insulating bearing to support said insulating bearing against backward movement in said housing, and a metal support plate over said insulating bearing secured to said housing to support said insulating bearing against frontward movement in said housing.
Claim 2
Dependent Claim
176 words
A multipole circuit interrupter comprising an insulating housing, a circuit interrupter mechanism supported in said insulating housing, said circuit interrupter mechanism comprising a stationary contact for each pole, a movable contact arm structure for each pole cooperating with the associated stationary contact, an elongated tie bar common to all of said poles, said movable contact arm structures being supported on said tie bar for simultaneous movement with said tie bar, said tie bar comprising a rigid metal bar and an insulating cover on said metal bar, support means supporting said tie bar for pivotal movement about the elongated axis thereof, said tie bar at at least one end thereof comprising a metal support pin, an insulating bearing having an opening therein receiving said support pin for pivotal movement in said opening, a support surface on said housing engaging said insulating bearing to support said insulating bearing against backward movement in said housing, and a metal support plate over said insulating bearing secured to said housing to support said insulating bearing against frontward movement in said housing.
Claim 3
Dependent Claim
87 words
A multipole circuit interrupter according to claim 1, said metal bar comprising a shoulder surface at said one end thereof in proximity to said support pin, said insulating housing comprising a sidewall having a slot therein, said support pin being positioned in said slot with said insulating bearing engaging said shoulder surface of said metal bar at one side thereof and the internal sidewall surface of said housing adjacent said slot at the other side thereof to support said tie bar against axial movement toward said sidewall.
Claim 4
Dependent Claim
49 words
A multipole circuit interrupter according to claim 2, said support plate being a flat support plate having a thickness undersurface, said insulating bearing being a flat insulating bearing having a thickness front surface engaging said thickness undersurface of said support plate to limit frontward movement of said insulating bearing.
Claim 5
Dependent Claim
45 words
A multipole circuit interrupter according to claim 3 said insulating housing having a pair of openings in the back thereof, said support plate comprising a pair of legs extending through said openings and being riveted over to fixedly support said support plate in said housing.
Claim 6
Dependent Claim
87 words
A multipole circuit interrupter according to claim 4, said insulating housing being a two-part housing comprising an insulating base and an insulating cover secured to said insulating base, said slot being in the sidewall of said insulating base and being open at the front of said insulating base whereby said tie bar is mounted by being dropped in said base with said insulating bearing thereon during which movement said support pin moves down through the open front of said slot to the mounted position in said base.
Claim 7
Dependent Claim
37 words
A multipole circuit interrupter according to claim 3, ans said insulating bearing separating the periphery of said support pin from said undersurface of said support plate by a dimension greater than the diameter of said support pin.
Claim 8
Dependent Claim
122 words
A multipole circuit interrupter according to claim 1, said tie bar comprising a separate metal support pin at each of the two opposite ends thereof, a pair of said insulating bearings, each of said insulating bearings having an opening therein receiving a different one of said support pins, a pair of said support surfaces on said housing engaging said insulating bearings to support said insulating bearings an tie bar against backward movement in said housing, a pair of said metal support plates, each of said metal support plates being supported over a different one of said insulating bearings and being secured to said housing whereby said metal support plates support said insulating bearings and tie bar against frontward movement in said housing.
Claim 9
Dependent Claim
106 words
A multipole circuit interrupter according to claim 7, said metal bar comprising a separate shoulder surface at each end thereof with each shoulder surface being in proximity to the associated support pin, said insulating housing comprising a pair of sidewalls with each sidewall having a slot therein, said support pins being positioned in said slots with each of said insulating bearings engaging the associated shoulder surface of said metal bar at one side thereof and the associated internal sidewall surface of said housing adjacent the associated slot at the other side thereof whereby said insulating bearings support said tie bar against axial movement in said housing.
Claim 10
Dependent Claim
55 words
A multipole circuit interrupter according to claim 8, each of said support plates being a flat support plate having a thickness undersurface, each of said insulating bearings being a flat insulating bearing having a thickness front surface engaging the associated thickness undersurface of the associated support plate to limit frontward movement of the insulating bearing.
Claim 11
Dependent Claim
168 words
A multipole circuit interrupter according to claim 9, said insulating housing being a two-part housing comprising an insulating base and an insulating cover secured to said insulating base, said slots being in the sidewalls of said insulating base and being open at the front of said insulating base whereby said tie bar is mounted by being dropped in said base with said insulating bearings thereon during which movement said support pins move down through the open front of said slots to the mounted position in said base, said insulating base having a pair of openings in the back thereof for each of said support plates, each of said support plates comprising a pair of legs extending through the associated openings and being riveted over to fixedly support the support plate in said housing, and each of said insulating bearings separating the periphery of the associated support pin from the associated undersurface of the associated support plate by a dimension greater than the diameter of the associated support pin.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |