US3553410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage switchgear housing with sticky viscous coating for catching metal particles and, thereby protecting the insulators
Assignee: Rockwell Automation Switzerland GmbH
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Filing: 1969-04-28
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Granted: 1971-01-05
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Expires: 1989-04-28
Abstract
Abstract An encased high-voltage switch gear in which the metal parts carrying high voltage current are arranged within a grounded metal sheathing and fixed therein by means of insulating supports, said metal sheathing forming a sealed enclosure and the metal surfaces within said enclosure being at least partly coated with a sticky layer of viscous material, such as polyisobutylene or polyvinylisobutylether, whereby metal shavings present or formed by abrasion within said sheathing will stick to the viscous layer and will not deposit on the insulating supports and reduce their electric insulating properties.
Inventors
- 👤 Tibor Morva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:30
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H02; H02B; H02B13/00; H02B13/02; H02B13/035; H02G; H02G5/00; H02G5/06; H02G5/063; H02G5/065
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
An encased high-voltage switch gear having high voltage carrying metal switching members, a grounded metal sheathing surrounding said switching members and forming a sealed enclosure filled with insulating gas, insulating supports for securing said switching members within said sheathing, a portion at least of the metal surfaces within said metal sheathing being coated with a layer of sticky, viscous material.
Claim 2
Dependent Claim
60 words
An encased high-voltage switch gear having high voltage carrying metal switching members, a grounded metal sheathing surrounding said switching members and forming a sealed enclosure filled with insulating gas, insulating supports for securing said switching members within said sheathing, a portion at least of the metal surfaces within said metal sheathing being coated with a layer of sticky, viscous material.
Claim 3
Dependent Claim
19 words
A high-voltage voltage switch gear according to claim 1, in which said layer of viscous material consists of polyisobutylene.
Claim 4
Dependent Claim
18 words
A high-voltage switch gear according to claim 1, in which said layer of viscous material consists of polyvinylisobutylether.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |