Patent US4282557A successfully refreshed from Google Patents.
US4282557A
Expired / Lapsed
US
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Surge voltage arrester housing having a fragible section
Assignee: General Electric Co
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Filing: 1979-10-29
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Granted: 1981-08-04
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Expires: 1999-10-29
Abstract
Abstract Surge voltage arresters are provided with a frangible housing to cause the housing to break at a predetermined section into a relatively few pieces upon varistor failure. The breaking of the housing deters excessive pressure buildup within the arrester.
Inventors
- 👤 Earl W. Stetson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:02
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/15; H01C; H01C7/00; H01C7/10; H01C7/12; H01C7/126
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
A voltage surge arrester housing comprising: an electrically insulating closure open at least at one end and having a first wall thickness for providing break resistant properties to the housing; and at least one frangible wall section for providing a preferred breaking portion to said housing, said frangible wall section comprising a first separate portion and a second separate portion of said closure cemented together to form a joint.
Claim 2
Dependent Claim
69 words
A voltage surge arrester housing comprising: an electrically insulating closure open at least at one end and having a first wall thickness for providing break resistant properties to the housing; and at least one frangible wall section for providing a preferred breaking portion to said housing, said frangible wall section comprising a first separate portion and a second separate portion of said closure cemented together to form a joint.
Claim 3
Dependent Claim
25 words
The housing of claim 1 wherein said two separate portions are cemented together with a material having a lower melting temperature than said insulating closure.
Claim 4
Dependent Claim
20 words
The housing of claim 2 wherein said cement is selected from the group consisting of plastic, glass, silicone and rubber.
Claim 5
Dependent Claim
81 words
A surge voltage arrester comprising: an insulating housing having a frangible section on at least part of its circumference and means for providing a ground connection and a line connection to said housing; and at least one varistor within said housing for providing electrical connection between said line and said ground upon the occasion of a surge voltage condition, said frangible section comprising at least two separate portions of said housing cemented together to form a jointed portion to said housing.
Claim 6
Dependent Claim
81 words
A surge voltage arrester comprising: an insulating housing having a frangible section on at least part of its circumference and means for providing a ground connection and a line connection to said housing; and at least one varistor within said housing for providing electrical connection between said line and said ground upon the occasion of a surge voltage condition, said frangible section comprising at least two separate portions of said housing cemented together to form a jointed portion to said housing.
Claim 7
Dependent Claim
27 words
The arrester of claim 4 wherein said cement comprises a porcelain or glass having a melting temperature approximately the same as the melting temperature of said housing.
Claim 8
Dependent Claim
20 words
The arrester of claim 4 wherein said cement has a melting temperature lower than the melting temperature of said housing.
Claim 9
Dependent Claim
21 words
The arrester of claim 6 wherein said cement is selected from the group consisting of a plastic, glass, silicone, and rubber.
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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |