US3727019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-type circuit interrupter with grounded metallic housing and removable operating mechanism tray
Assignee: ABB Inc USA
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Filing: 1970-11-10
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Granted: 1973-04-10
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Expires: 1990-11-10
Abstract
Abstract A circuit interrupter of the vacuum type is provided, of the inline type, having a central grounded housing and oppositelyextending hollow bushing structures, through which extends an elongated conducting operating rod actuating the movable contact of a vacuum-type circuit-interrupter unit disposed in one of the hollow bushing structures. An insulating main operating lever provides additional insulation between the grounded operating mechanism structure and the live elongated conducting operating rod, which effects the movement of the movable contact within the vacuum-type circuit interrupter.
Inventors
- 👤 I Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:38
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/60; H01H33/66; H01H33/666; H01H3/00; H01H3/22; H01H3/30; H01H3/32; H01H3/46; H01H33/02; H01H33/24; H01H75/00; H01H75/02; H01H75/04; H01H33/027
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
In combination, an ''''in-line'''' circuit interrupter including a pair of hollow insulating bushings and an intervening metallic mecHanism housing, a combined conductor and operating rod extending axially centrally through said hollow insulating bushings, an operating mechanism having an operating member removably connected to said operating rod and secured to a tray, said tray closing one side of the mechanism housing and removable therefrom for maintenance purposes.
Claim 2
Dependent Claim
66 words
In combination, an ''''in-line'''' circuit interrupter including a pair of hollow insulating bushings and an intervening metallic mecHanism housing, a combined conductor and operating rod extending axially centrally through said hollow insulating bushings, an operating mechanism having an operating member removably connected to said operating rod and secured to a tray, said tray closing one side of the mechanism housing and removable therefrom for maintenance purposes.
Claim 3
Dependent Claim
13 words
The combination of claim 1, wherein the operating member is of insulating material.
Claim 4
Dependent Claim
68 words
A circuit breaker including a metallic mechanism housing, a pair of oppositely-extending tubular bushings extending into said metallic mechanism housing, an interrupting unit disposed within one bushing, line-terminal means at the opposite extremities of the two bushings, a longitudinally-movable combined operating-rod and conductor operable generally centrally of said bushings, and the operating mechanism being secured to a tray removably mounted to one side of the metallic mechanism housing.
Claim 5
Dependent Claim
68 words
A circuit breaker including a metallic mechanism housing, a pair of oppositely-extending tubular bushings extending into said metallic mechanism housing, an interrupting unit disposed within one bushing, line-terminal means at the opposite extremities of the two bushings, a longitudinally-movable combined operating-rod and conductor operable generally centrally of said bushings, and the operating mechanism being secured to a tray removably mounted to one side of the metallic mechanism housing.
Claim 6
Dependent Claim
71 words
A circuit breaker including a grounded metallic mechanism housing, a pair of oppositely-extending tubular bushings extending into said metallic grounded mechanism housing, a vacuum-interrupter unit disposed within one bushing, line-terminal means at the opposite extremities of the two bushings, said vacuum-interrupter unit having a fixed contact at one end supported by one of the terminal means, and a unitary longitudinally-movable combined operating rod and conductor operable generally centrally of said bushings.
Claim 7
Dependent Claim
71 words
A circuit breaker including a grounded metallic mechanism housing, a pair of oppositely-extending tubular bushings extending into said metallic grounded mechanism housing, a vacuum-interrupter unit disposed within one bushing, line-terminal means at the opposite extremities of the two bushings, said vacuum-interrupter unit having a fixed contact at one end supported by one of the terminal means, and a unitary longitudinally-movable combined operating rod and conductor operable generally centrally of said bushings.
Claim 8
Dependent Claim
18 words
The combination of claim 4, wherein a current transformer encircles the inward protruding sleeve portion of one bushing.
Claim 9
Dependent Claim
40 words
The combination of claim 4, wherein an operating mechanism is disposed adjacent the lower part of the metallic mechanism housing, and a bifurcating rotatable main operating lever mechanically interconnects the operating mechanism with the longitudinally-movable conducting operating and contact rod.
Claim 10
Dependent Claim
18 words
The combination of claim 4, wherein a sleeve and contact-compression spring encircles the movable operating and contact rod.
Claim 11
Dependent Claim
21 words
The combination of claim 4, wherein the conducting operating rod has an insulating sleeve thereabout to improve the electrical field gradient.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |