US3857006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas insulated switching apparatus
Assignee: Hitachi Ltd
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Filing: 1973-10-30
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Granted: 1974-12-24
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Expires: 1993-10-30
Abstract
Abstract A gas insulated switching apparatus having a simple construction and small size in which a circuit breaker unit is disposed within a closed vessel filled with an insulating gas so as to be movable over a predetermined distance within the closed vessel and is provided with an input side terminal conductor and an output side terminal conductor. In the apparatus, stationary contacts of disconnecting switch means and stationary earthing contacts of earthing switch means are disposed respectively at the extreme positions of the opposite ends of the terminal conductors which move with the circuit breaker unit.
Inventors
- 👤 G Daimon
- 👤 S Nakano
- 👤 T Kishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:53
CPC Classifications
H; H02; H02B; H02B13/00; H02B13/02; H02B13/035; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H02B11/00; H02B11/12; H02B13/0352
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
115 words
A gas insulated switching apparatus comprising a closed vessel filled with an electrical insulating gas, a circuit breaker unit disposed within said closed vessel and provided with an input side terminal conductor and an output side terminal conductor, drive means for causing reciprocating movement of said circuit breaker unit within said closed vessel, actuating means for actuating said circuit breaker unit for making and breaking the circuit, and disconnecting switch means connected to an input side electrical path and an output side electrical path respectively and adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductors due to the movement of said circuit breaker unit.
Claim 2
Dependent Claim
115 words
A gas insulated switching apparatus comprising a closed vessel filled with an electrical insulating gas, a circuit breaker unit disposed within said closed vessel and provided with an input side terminal conductor and an output side terminal conductor, drive means for causing reciprocating movement of said circuit breaker unit within said closed vessel, actuating means for actuating said circuit breaker unit for making and breaking the circuit, and disconnecting switch means connected to an input side electrical path and an output side electrical path respectively and adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductors due to the movement of said circuit breaker unit.
Claim 3
Dependent Claim
122 words
A gas insulated switching apparatus comprising a closed vessel filled with an electrical insulating gas, a circuit breaker unit disposed within said closed vessel and provided with an input side terminal conductor and an output side terminal conductor extending in the same direction in parallel with each other, drive means for causing linear reciprocating movement of said circuit breaker unit, actuating means for actuating said circuit breaker unit for making and breaking the circuit, and disconnecting switch means connected to an input side electrical path and an output side electrical path respectively and adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductors due to the movement of said circuit breaker unit.
Claim 4
Dependent Claim
122 words
A gas insulated switching apparatus comprising a closed vessel filled with an electrical insulating gas, a circuit breaker unit disposed within said closed vessel and provided with an input side terminal conductor and an output side terminal conductor extending in the same direction in parallel with each other, drive means for causing linear reciprocating movement of said circuit breaker unit, actuating means for actuating said circuit breaker unit for making and breaking the circuit, and disconnecting switch means connected to an input side electrical path and an output side electrical path respectively and adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductors due to the movement of said circuit breaker unit.
Claim 5
Dependent Claim
57 words
A gas insulated switching apparatus as claimed in claim 1, wherein said closed vessel is substantially cylindrical in shape and has an axial end opening closed gas-tight by a detachable end cover, and connecting means are provided so as to electrically and mechanically release said terminal conductors within the range of the diametral size of said opening.
Claim 6
Dependent Claim
59 words
A gas insulated switching apparatus as claimed in claim 1, wherein a pair of stationary earthing contacts are provided in said closed vessel so that said terminal conductors can be brought into contact with the respective stationary earthing contacts when said disconnecting switch means are urged to the open position due to the movemEnt of said circuit breaker unit.
Claim 7
Dependent Claim
85 words
A gas insulated switching apparatus as claimed in claim 1, wherein a pair of stationary earthing contacts are disposed so that said terminal conductors can be brought into contact with the respective stationary earthing contacts when said disconnecting switch means are urged to the open position due to the movement of said circuit breaker unit, and said stationary earthing contacts are mounted on the inner wall surface of a detachable end cover closing gas-tight an opening bored in the side wall of said closed vessel.
Claim 8
Dependent Claim
59 words
A gas insulated switching apparatus as claimed in claim 2, wherein a link means consisting of a plurality of links is disposed in the transmission path of the actuating force of said actuating means and the mechanical connection between said links can be maintained within the range in which said circuit breaker unit is moved by said drive means.
Claim 9
Dependent Claim
72 words
A gas insulated switching apparatus as claimed in claim 2, wherein said drive means comprises a movable supporting block fixedly supporting said circuit breaker unit thereon, a threaded rod in threaded engagement with said movable supporting block for linearly driving said circuit breaker unit over a predetermined distance within said closed vessel, and a rail for guiding said movable supporting block in a predetermined direction along the axis of said threaded rod.
Claim 10
Dependent Claim
124 words
A gas insulated switching apparatus as claimed in claim 2, wherein each said disconnecting switch means comprises a pair of electrical insulating members defining an insulating gas space surrounding the disconnecting portion, a movable contact extending through one of said insulating members, a resilient means for normally biasing said movable contact in a parting direction, a sealing means for maintaining gas-tight the closed space defined by said insulating members regardless of movement of said movable contact, and a contact disposed outside of said closed space for establishing an electrical connection between said movable contact and said terminal conductor which engages with said movable contact to restrict the movement of said movable contact away from said stationary contact against the force of said resilient means.
Claim 11
Dependent Claim
153 words
A gas insulated switching apparatus comprising a closed vessel filled with an electrical insulating gas, three circuit breaker units disposed within said closed vessel, each said circuit breaker unit being provided with an input side terminal conductor and an output side terminal conductor, drive means for causing reciprocating movement of said circuit breaker units, within said closed vessel, actuating means for actuating said circuit breaker units for making and breaking the circuit, and a disconnecting switch provided for each said circuit breaker unit and adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductors due to the movement of the associated circuit breaker unit, said terminal conductors of individual phases being disposed at the vertexes of an isosceles triangle, and those terminal conductors disposed at the vertexes of the base of the isoceles triangle being arranged to lie in the same horizontal plane.
Claim 12
Dependent Claim
153 words
A gas insulated switching apparatus comprising a closed vessel filled with an electrical insulating gas, three circuit breaker units disposed within said closed vessel, each said circuit breaker unit being provided with an input side terminal conductor and an output side terminal conductor, drive means for causing reciprocating movement of said circuit breaker units, within said closed vessel, actuating means for actuating said circuit breaker units for making and breaking the circuit, and a disconnecting switch provided for each said circuit breaker unit and adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductors due to the movement of the associated circuit breaker unit, said terminal conductors of individual phases being disposed at the vertexes of an isosceles triangle, and those terminal conductors disposed at the vertexes of the base of the isoceles triangle being arranged to lie in the same horizontal plane.
Claim 13
Dependent Claim
129 words
A gas insulated switchigng apparatus comprising a closed vessel filled with an electrical insulating gas, three circuit breaker units disposed within said closed vessel, each said circuit breaker unit being provided with an input side terminal conductor and an output side terminal conductor, a common movable supporting block for fixedly supporting said circuit breaker units thereon, drive means for causing linear reciprocating movement of said movable supporting block, actuating means for actuating said circuit breaker units for making and breaking the circuit, and three disconnecting switches associated with said three circuit breaker units respectively, each said disconnecting switch being adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductOrs due to the movement of the associated circuit breaker unit.
Claim 14
Dependent Claim
129 words
A gas insulated switchigng apparatus comprising a closed vessel filled with an electrical insulating gas, three circuit breaker units disposed within said closed vessel, each said circuit breaker unit being provided with an input side terminal conductor and an output side terminal conductor, a common movable supporting block for fixedly supporting said circuit breaker units thereon, drive means for causing linear reciprocating movement of said movable supporting block, actuating means for actuating said circuit breaker units for making and breaking the circuit, and three disconnecting switches associated with said three circuit breaker units respectively, each said disconnecting switch being adapted to be urged to one of the closed and open positions depending on the movement of said terminal conductOrs due to the movement of the associated circuit breaker unit.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |