US4092694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overvoltage surge arrester having laterally biased internal components
Assignee: General Electric Co
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Filing: 1977-03-16
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Granted: 1978-05-30
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Expires: 1997-03-16
Abstract
Abstract Flat internal components of an arrester are stacked longitudinally inside the insulating housing cylinder with a perimeter portion contacting the inside wall of the housing. Each component has a guide channel extending longitudinally on its perimeter portion opposite the portion in contact with the wall. A resilient rolling bias member is disposed in the channel of each component in a deformed stressed state and forces the components laterally against the wall.
Inventors
- 👤 Earl W. Stetson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/10; H01C7/12; H01C7/102
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
An electrical overvoltage surge arrester, comprising: a hollow insulating housing cylinder with conductive electrical terminal members; a plurality of internal components disposed in said housing and closely stacked longitudinally therein with first contact surfaces of first perimeter portions resting against an inside wall of said housing; second, bias surfaces on second perimeter portions of said components, said bias surfaces extending longitudinally in said housing and resilient electrically insulating bias members disposed in a deformed, stressed state against said bias surfaces and forcing said first surfaces against said wall.
Claim 2
Dependent Claim
88 words
An electrical overvoltage surge arrester, comprising: a hollow insulating housing cylinder with conductive electrical terminal members; a plurality of internal components disposed in said housing and closely stacked longitudinally therein with first contact surfaces of first perimeter portions resting against an inside wall of said housing; second, bias surfaces on second perimeter portions of said components, said bias surfaces extending longitudinally in said housing and resilient electrically insulating bias members disposed in a deformed, stressed state against said bias surfaces and forcing said first surfaces against said wall.
Claim 3
Dependent Claim
28 words
The arrester of claim 1 wherein the longitudinal dimensions of said member as installed in said arrester is approximately equal to the longitudinal dimension of said bias surface.
Claim 4
Dependent Claim
11 words
The arrester of claim 2 wherein said bias member is spherical.
Claim 5
Dependent Claim
12 words
The arrester of claim 3 wherein said component is a varistor unit.
Claim 6
Dependent Claim
72 words
The arrester of claim 4 wherein said varistor unit comprises a varistor discoid provided with a collar of resilient electrically insulating material about its perimeter a first contact surface of a first perimeter portion of said collar resting against the inside wall of said housing and a second, bias surface opposite perimeter portion having a longitudinally extending channel with a radius of curvature approximately equal to the unstressed radius of said spheroid.
Claim 7
Dependent Claim
39 words
The arrester of claim 5 wherein said varistor is of a zinc oxide ceramic varistor compound, said collar material is a resilient binder filled with granular heat-conducting particles, and said housing is elongated and is generally circular in crosssection.
Claim 8
Dependent Claim
56 words
The arrester of claim 6 and wherein said components are stacked along substantially the entire length of said housing and resiliently clamped between terminal end cap assemblies fixed to the ends of said housing and wherein said bias member is between said bias surface and the inside wall of said hosing remote from said contact surfaces.
References Cited (Backward Citations)
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US2861782A
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US3214634A
Cited
US3226593A
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US3566183A
Cited
US3987343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |