US3846601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed-gas circuit interrupter
Assignee: ABB Inc USA
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Filing: 1972-03-31
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Granted: 1974-11-05
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Expires: 1992-03-31
Abstract
Abstract A high-voltage compressed-gas circuit interrupter is provided including a tank structure, and a terminal bushing extending therein supporting an arc-extinguishing unit. A high-pressure gas-reservoir chamber is disposed adjacent the inner end of the terminal bushing for close proximity to the separable contact structure of the arc-extinguishing unit. Additional features include a blast-valve means, disposed in close proximity to the stationary contact structure, and the partial storage of high-pressure gas within the hollow stud of the terminal bushing to prevent liquefaction of a liquefiable gas under low-ambient temperature conditions. Another feature of the invention includes a rotating operating rod for low inertia, and the pilot-valve operation of the blastvalve mechanism by a cam interconnection between the pilot-rod linkage and the rotating operating tube.
Inventors
- 👤 W Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:42
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/53; H01H33/56; H01H33/562; H01H33/70; H01H33/80; H01H33/82
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
73 words
A compressed-gas circuit interrupter including a metallic tank and a terminal bushing extending therein, an arcextinguishing unit including separable contact structure, at least, partically supported by the interior end of said terminal bushing, a high-pressure gas-reservoir chamber also supported adjacent the inner end of the terminal bushing and supported thereby for close proximity to said separable contact structure, and the gas exhausting during arc interruption into the general region within said metallic tank.
Claim 2
Dependent Claim
73 words
A compressed-gas circuit interrupter including a metallic tank and a terminal bushing extending therein, an arcextinguishing unit including separable contact structure, at least, partically supported by the interior end of said terminal bushing, a high-pressure gas-reservoir chamber also supported adjacent the inner end of the terminal bushing and supported thereby for close proximity to said separable contact structure, and the gas exhausting during arc interruption into the general region within said metallic tank.
Claim 3
Dependent Claim
56 words
The combination according to claim 1, wherein a pair of terminal bushings extend within the metallic tank, an arc-extinguishing unit including a pair of separable contacts is supported by the interior end of each terminal bushing, and a high-pressure gas-reservoir chamber is supported adjacent the interior end of each terminal bushing closely to each arc-extinguishing unit.
Claim 4
Dependent Claim
27 words
The combination according to claim 1, wherein the metallic tank is at high voltage and supported up in the air from ground potential by insulating supporting means.
Claim 5
Dependent Claim
27 words
The combination according to claim 2, wherein blast-valve means are associated with each of the arc-extinguishing units, and piston means are utilized to actuate said blast-valve means.
Claim 6
Dependent Claim
56 words
The combination according to claim 4, wherein a pilot exhaust-valve means is associated with each blast-valve means, and a linkage means interconnects the pilot exhaust-valve of each arc-extinguishing unit with the movable contact of the respective unit, whereby a blast of arc extinguishing gas is forced to flow between the separated contact structure for arc extinction.
Claim 7
Dependent Claim
81 words
The combination according to claim 2, wherein each terminal bushing supports an arc-extinguishing unit including separable contact structure and an associated high-pressure gas-reservoir chamber, a generally horizontally extending conducting plate structure is fixedly secured to the side walls of the tank structure and has sliding contact means associated therewith, each arc-extinguishing unit having a movable contact making sliding contacting engagement with said sliding contact means, whereby the generally horizontally extending plate structure provides a current-conducting path between the two arc-extinguishing units.
Claim 8
Dependent Claim
26 words
The combination according to claim 6, wherein the generally horizontally extending plate structure includes bracket means for structurally supporting the operating linkage for each movable contact.
Claim 9
Dependent Claim
54 words
The combination according to claim 1, wherein the metallic tank is at high voltage, insulating supPorting means supports said high-voltage metallic tank up in the air above ground potential, and a rotating insulating operating tube extending upwardly through the insulating supporting means interconnects the operating means for the arc-extinguishing unit and the ground mechanism.
Claim 10
Dependent Claim
42 words
The combination according to claim 8, wherein there is present only a slight volume between the insulating supporting means and the outside surface of the rotating insulating operating rod for propelling fragments in the event of fracture of the insulating supporting means.
Claim 11
Dependent Claim
128 words
A compressed-gas circuit interrupter including an upstanding hollow insulating column, a rotatable insulating operating tube extending axially of said insulating column and having only slight clearance therebetween, means for guiding rotating movement of said insulating rotatable operating tube, a pair of terminal bushings extending within the live metallic tank and carrying arc-extinguishing units and high-pressure gas-reservoir chambers at the interior ends thereof, blast-valve means associated with each high-pressure gas-reservoir chamber, separable contact means associated with each arc-extinguishing unit, and operating means for the movable contact structure and the blast-valve means including a pilot-exhaust valve for each blast-valve means, whereby separation of the movable contact structure and actuation of the pilot-exhaust valve means permits a flow of high-pressure gas to blast between the separable contact structure for arc-extinguishing purposes.
Claim 12
Dependent Claim
128 words
A compressed-gas circuit interrupter including an upstanding hollow insulating column, a rotatable insulating operating tube extending axially of said insulating column and having only slight clearance therebetween, means for guiding rotating movement of said insulating rotatable operating tube, a pair of terminal bushings extending within the live metallic tank and carrying arc-extinguishing units and high-pressure gas-reservoir chambers at the interior ends thereof, blast-valve means associated with each high-pressure gas-reservoir chamber, separable contact means associated with each arc-extinguishing unit, and operating means for the movable contact structure and the blast-valve means including a pilot-exhaust valve for each blast-valve means, whereby separation of the movable contact structure and actuation of the pilot-exhaust valve means permits a flow of high-pressure gas to blast between the separable contact structure for arc-extinguishing purposes.
Claim 13
Dependent Claim
89 words
The combination according to claim 10, wherein a rotatable hollow tubular operating rod extends upwardly through the insulating supporting column, a pair of reservoir chambers are disposed adjacent the inner ends of the pair of terminal bushings, and a generally Y-shaped supply pipe being in fluid communication with the aforesaid supply tube, and synchronizing means are provided for synchronizing opening of the separable contact structure and opening of the blast-valve means for the purpose of supplying a high-pressure blast of gas at the arc established in each arc-extinguishing unit.
Claim 14
Dependent Claim
125 words
A high-voltage compressed-gas circuit interrupter including a base, an insulating column extending upwardly from said base and supporting a live metallic tank at the upper end thereof, a pair of terminal bushings extending into said live metallic tank and carrying a pair of arc-extinguishing units and a pair of high-pressure gas reservoirs at the interior ends thereof, separable contact structure and blast-valve means associated with each arc-extinguishing unit, a generally horizontally extending conducting plate structure secured to the inner walls of said live metallic tank and having sliding contact fingers associated therewith, the movable contact of each arc-extinguishing unit making sliding engagement with said sliding contact fingers, whereby said horizontally extending conducting plate structure causes the transmission of current flow between the two arc-extinguishing units.
Claim 15
Dependent Claim
125 words
A high-voltage compressed-gas circuit interrupter including a base, an insulating column extending upwardly from said base and supporting a live metallic tank at the upper end thereof, a pair of terminal bushings extending into said live metallic tank and carrying a pair of arc-extinguishing units and a pair of high-pressure gas reservoirs at the interior ends thereof, separable contact structure and blast-valve means associated with each arc-extinguishing unit, a generally horizontally extending conducting plate structure secured to the inner walls of said live metallic tank and having sliding contact fingers associated therewith, the movable contact of each arc-extinguishing unit making sliding engagement with said sliding contact fingers, whereby said horizontally extending conducting plate structure causes the transmission of current flow between the two arc-extinguishing units.
Claim 16
Dependent Claim
35 words
The combination according to claim 12, wherein a rotatable insulating operating tube extends upwardly through the insulating column and has cam means disposed at the upper end thereof for actuation of the pilot-exhaust valve means.
Claim 17
Dependent Claim
28 words
The combination according to claim 12, wherein a pair of insulating pilot exhaust-valve operating rods are connected together and cam actuated by the rotatable insulating tubular operating rod.
Claim 18
Dependent Claim
92 words
The combination, a high-voltage compressed-gas circuit interrupter including an upstanding insulating supporting column, a live metallic tank surmounted upon said insulating column and having a pair of terminal bushings extending therewithin, a pair of arc extinguishing units and a pair of high-pressure gas-reservoir chambers disposed at the interior ends of said pair of terminal bushings, a pair of separable contacts and piston-actuated blast-valve means associated with each arc-extinguishing units, and pilot exhaust valve means associated with each unit and simultaneously actuated for effecting a blast of high-pressure gas at the established arcs.
Claim 19
Dependent Claim
92 words
The combination, a high-voltage compressed-gas circuit interrupter including an upstanding insulating supporting column, a live metallic tank surmounted upon said insulating column and having a pair of terminal bushings extending therewithin, a pair of arc extinguishing units and a pair of high-pressure gas-reservoir chambers disposed at the interior ends of said pair of terminal bushings, a pair of separable contacts and piston-actuated blast-valve means associated with each arc-extinguishing units, and pilot exhaust valve means associated with each unit and simultaneously actuated for effecting a blast of high-pressure gas at the established arcs.
Claim 20
Dependent Claim
26 words
The combination according to claim 15, wherein the conducting stud of the terminal bushing is tubular and provides gas communication with the high-pressure gas reservoir chamber.
Claim 21
Dependent Claim
26 words
The combination according to claim 2, wherein the conducting stud of each terminal bushing is tubular and provides gas communication with the respective high-pressure reservoir chamber.
Claim 22
Dependent Claim
105 words
The combination, a high-voltage compressed-gas circuit interrupter including an upstanding insulating column, a live metallic tank surmounted upon said column and having a pair of terminal bushings extending therewithin, each terminal bushing having a tubular terminal stud in gas communication with a supported high-pressure gas reservoir tank disposed at the interior end of each terminal bushing, each terminal bushing supporting an arc-extinguishing unit including separable contact structure, blast-valve means associated with each high-pressure gas reservoir, and means actuating the blast-valve structure in accordance with opening movement of the movable contact structure, whereby a blast of high-pressure gas is caused to flow toward the established arcing.
Claim 23
Dependent Claim
105 words
The combination, a high-voltage compressed-gas circuit interrupter including an upstanding insulating column, a live metallic tank surmounted upon said column and having a pair of terminal bushings extending therewithin, each terminal bushing having a tubular terminal stud in gas communication with a supported high-pressure gas reservoir tank disposed at the interior end of each terminal bushing, each terminal bushing supporting an arc-extinguishing unit including separable contact structure, blast-valve means associated with each high-pressure gas reservoir, and means actuating the blast-valve structure in accordance with opening movement of the movable contact structure, whereby a blast of high-pressure gas is caused to flow toward the established arcing.
Claim 24
Dependent Claim
70 words
The combination according to claim 18, wherein there is provided a generally horizontally extending conducting plate structure, said plate structure having two pairs of sliding contact fingers, two movable contacts being in contacting engagement with said sliding contact fingers, operating means for the movable contact structure including a pair of bell-cranks pivotally supported on said horizontally extending conducting plate structure, and means for causing the actuation of said two bell-cranks.
Claim 25
Dependent Claim
30 words
The combination according to claim 19, wherein there is provided a rotatable insulating hollow operating tube extending upwardly interiorly of a hollow insulating column and having only slight clearance therewith.
Claim 26
Dependent Claim
33 words
The combination according to claim 19, wherein a pair of pilot-exhaust valves are associated with the pair of high-pressure gas-reservoir chambers and is mechanically connected so as to effect simultaneous blast-valve opening movement.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |