Patent US3573567A successfully refreshed from Google Patents.
US3573567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state switch housing
Assignee: General Electric Co
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Filing: 1969-04-08
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Granted: 1971-04-06
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Expires: 1989-04-08
Abstract
Abstract The present invention relates to a solid-state switch housing and heat sink. More particularly it provides a heat sink which is readily mountable to a larger heat sink and in an insulating enclosure which provides a relatively long electrical path between the switch and the heat sink as compared to the heat transfer path from the switch to the heat sink.
Inventors
- 👤 Robert L Harris
- 👤 Joseph P Stefani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:20
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W40/00; H10W40/60; H10W40/611; H10W40/20; H10W40/231; H10W40/235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A solid-state switch mounting which comprises: a base of an electrically conductive and heat conductive material said base having a heat-receiving surface and an oppositely extending attachment means for mounting said base to a heat sink; an electrically insulating ceramic wafer of high heat conductivity mounted on said heat-receiving surface; said wafer having an electrically nonconducting surface at least at the edge portion; a solid-state switch mounted on said wafer in heat delivering relation thereto; an electrically insulating collar in contact with said nonconducting edges portion of said wafer and extending up from said heat receiving surface; said collar forming with said wafer an insulating cup; electrical conductors from said solid-state switch extending up through said cup; and the oversurface electrically insulating path from an exposed pOrtion of said upwardly extending conductors to said base being longer relative to the heat conductive path between the solid-state switch and the base.
Claim 2
Dependent Claim
150 words
A solid-state switch mounting which comprises: a base of an electrically conductive and heat conductive material said base having a heat-receiving surface and an oppositely extending attachment means for mounting said base to a heat sink; an electrically insulating ceramic wafer of high heat conductivity mounted on said heat-receiving surface; said wafer having an electrically nonconducting surface at least at the edge portion; a solid-state switch mounted on said wafer in heat delivering relation thereto; an electrically insulating collar in contact with said nonconducting edges portion of said wafer and extending up from said heat receiving surface; said collar forming with said wafer an insulating cup; electrical conductors from said solid-state switch extending up through said cup; and the oversurface electrically insulating path from an exposed pOrtion of said upwardly extending conductors to said base being longer relative to the heat conductive path between the solid-state switch and the base.
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |