US4262319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning arrester for use in gas insulated electrical power device
Assignee: Electric Power Research Institute
•
Filing: 1979-04-23
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Granted: 1981-04-14
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Expires: 1999-04-23
Abstract
Abstract A gas cooled lightning arrester includes a plurality of zinc oxide blocks which are joined together to form serially connected non-linear resistors and capacitors. The blocks may be joined by clamps or metal plates may be bonded to the ends of the blocks. Cooling fins integral with the zinc oxide blocks or provided by the metal plates facilitate heat dissipation. The housing for the lightning arrester includes an inner wall which defines a channel for the convection flow of gas coolant.
Inventors
- 👤 E. Robert Perry
- 👤 Mario Rabinowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:27
CPC Classifications
H; H02; H02H; H02H3/00; H02H3/20; H02H3/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A lightning arrester for use in a gas insulated electrical power device comprising a housing in association with said power device, a plurality of non-linearly resistive blocks connected by conductive means and forming serially connecting capacitors, said blocks including heat dissipation fins, and means within said housing to facilitate the flow of said gas about said resistive blocks.
Claim 2
Dependent Claim
58 words
A lightning arrester for use in a gas insulated electrical power device comprising a housing in association with said power device, a plurality of non-linearly resistive blocks connected by conductive means and forming serially connecting capacitors, said blocks including heat dissipation fins, and means within said housing to facilitate the flow of said gas about said resistive blocks.
Claim 3
Dependent Claim
34 words
A lightning arrester as defined by claim 1 wherein said means facilitating flow of gas comprises a barrier within said housing and defining a channel for the convection flow of gas within said housing.
Claim 4
Dependent Claim
14 words
A lightning arrester as defined by claim 2 wherein said blocks comprise zinc oxide.
Claim 5
Dependent Claim
17 words
A lightning arrester as defined by claim 1 wherein said blocks are serially connected by clamp means.
Claim 6
Dependent Claim
25 words
A lightning arrester as defined by claim 3 and further including metallic plates bonded to the ends of said blocks for providing capacitive voltage grading.
Claim 7
Dependent Claim
21 words
A lightning arrester as defined by claim 5 wherein said metallic plates extend outwardly from said blocks as heat dissipation fins.
Claim 8
Dependent Claim
35 words
A lightning arrester as defined by claim 6 wherein alternate ones of said heat metallic plates are cup shaped and are closely spaced from adjacent fins and comprise a part of said serially connected capacitors.
Claim 9
Dependent Claim
20 words
A lightning arrester as defined by claim 7 wherein said closely spaced fins are separated by high dielectric constant material.
Claim 10
Dependent Claim
23 words
A lightning arrester as defined by claim 8 wherein said gas comprises sulphur hexafluoride and said high dielectric constant material comprises barium titanate.
References Cited (Backward Citations)
FR963529A
Cited
US2166951A
Cited
US3275893A
Cited
US3881766A
Cited
DE2425814A1
Cited
US4100588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |