US3590186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum interrupter having series connected resistor and shunting means for the latter
Assignee: Allis Chalmers Corp
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Filing: 1968-12-19
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Granted: 1971-06-29
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Expires: 1988-12-19
Abstract
Abstract A vacuum interrupter employing a reciprocably movable contact has an opening and closing resistor in series circuit therewith and a knife switch is connected across the resistor to shunt it in and out of circuit. Two reciprocably movable operating members are connected at one of their ends to the movable contact of the vacuum interrupter and to the knife switch blade, respectively. The other ends of the two operating members are connected to cam slots in an actuating cam which is reciprocably movable transversely to the direction of movement of the two operating members. The cam slots are fashioned so that as the actuating cam is moved the vacuum interrupter closes before and opens after the knife switch.
Inventors
- 👤 Rochard G Brunner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:24
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/666; H01H33/02; H01H33/04; H01H33/16; H01H33/168; H01H3/00; H01H3/32; H01H3/42; H01H33/6661
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
In combination, a vacuum interrupter for switching capacitance in and out of an electrical power system, a damping resistor in series with said interrupter, a switch for shunting said resistor, and operating means for closing and opening said interrupter and said switch, said operating means comprising: an actuating member reciprocably movable to open and closed positions, an operating member for said interrupter, an operating member for said switch, each of said operating members being reciprocably movable in directions transverse to the direction of movement of said actuating member, and cam means on said actuating member cooperating with cam means on said operating members for effecting closing movement of said interrupter operating member prior to closing movement of said switch operating member and for effecting opening movement of said switch operating member before opening movement of said interrupter operating member.
Claim 2
Dependent Claim
139 words
In combination, a vacuum interrupter for switching capacitance in and out of an electrical power system, a damping resistor in series with said interrupter, a switch for shunting said resistor, and operating means for closing and opening said interrupter and said switch, said operating means comprising: an actuating member reciprocably movable to open and closed positions, an operating member for said interrupter, an operating member for said switch, each of said operating members being reciprocably movable in directions transverse to the direction of movement of said actuating member, and cam means on said actuating member cooperating with cam means on said operating members for effecting closing movement of said interrupter operating member prior to closing movement of said switch operating member and for effecting opening movement of said switch operating member before opening movement of said interrupter operating member.
Claim 3
Dependent Claim
27 words
The combination according to claim 1 wherein said actuating member is substantially flat and wherein said cam means comprises a plurality of slots in said actuating member.
Claim 4
Dependent Claim
23 words
The combination according to claim 2 wherein each of said slots comprise two offset segments, one of which is longer than the other.
Claim 5
Dependent Claim
180 words
In combination, a support, a vacuum interrupter mounted on said support and having a reciprocably movable contact rod, said interrupter having a pair of electrical connectors, a reciprocably movable interrupter operating member connected to said contact rod, said interrupter operating member having a cam follower, a resistor mounted on said support and having a pair of electrical connectors, a shunting switch mounted on said support and having a pair of electrical connectors, a pivotable blade and a stationary contact for cooperation with said blade, means for electrically connecting one of said electrical connectors of said resistor to one of said electrical connectors of said interrupter and to one of said connectors of said switch, a reciprocably movable switch operating member connected to said pivotable switch blade, said switch operating member having a cam follower, and an actuating member on said support and being reciprocably movable in directions transverse to the directions of movement of said interrupter operating member and said switch operating member, said actuating member having cam slots therein for cooperating with the cam followers to said operating members.
Claim 6
Dependent Claim
180 words
In combination, a support, a vacuum interrupter mounted on said support and having a reciprocably movable contact rod, said interrupter having a pair of electrical connectors, a reciprocably movable interrupter operating member connected to said contact rod, said interrupter operating member having a cam follower, a resistor mounted on said support and having a pair of electrical connectors, a shunting switch mounted on said support and having a pair of electrical connectors, a pivotable blade and a stationary contact for cooperation with said blade, means for electrically connecting one of said electrical connectors of said resistor to one of said electrical connectors of said interrupter and to one of said connectors of said switch, a reciprocably movable switch operating member connected to said pivotable switch blade, said switch operating member having a cam follower, and an actuating member on said support and being reciprocably movable in directions transverse to the directions of movement of said interrupter operating member and said switch operating member, said actuating member having cam slots therein for cooperating with the cam followers to said operating members.
Claim 7
Dependent Claim
54 words
The combination according to claim 4 wherein said support comprises a housing, a hollow insulator column on said housing, and a casing on said column, wherein said casing supports a pair of insulating housings in which said resistor and said vacuum interrupter are mounted, and wherein said actuating member is disposed within said casing.
Claim 8
Dependent Claim
21 words
The combination according to claim 5 comprising biasing means for biasing said actuating member to a predetermined position within said casing.
Claim 9
Dependent Claim
35 words
The combination according to claim 6 wherein said blade of said switch is mounted on said casing and wherein said stationary contact of said shunting switch is mounted on the insulating housing of said resistor.
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |