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Patent US4183042A successfully refreshed from Google Patents.
US4183042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power semiconductor device
Assignee: Individual
•
Filing: 1978-02-10
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Granted: 1980-01-08
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Expires: 1998-02-10
Abstract
Abstract A power semiconductor device for efficient heat dissipation. The construction eliminates a loose contact between the semiconductor element and a cooling jig.
Inventors
- 👤 Petr Novak
- 👤 Jaroslav Pellant
- 👤 Jaroslav Zuna
- 👤 Jindrich Kratina
- 👤 Pavel Reichel
- 👤 Pavel Kafunek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:38
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/47; H10W72/00; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
123 words
A power semiconductor device comprising: a semiconductor junction section; two first electrode parts having their inner sides attached to opposite sides of the semiconductor junction section; two second electrode parts attached to the outer sides of the respective first electrode part and each second electrode part defining a system of hollow spaces therein, said system of hollow spaces of the second parts have first passages disposed in a first plane and second passages disposed in a second plane, said first and second planes being parallel to said semiconductor junction section and are provided with an inlet and outlet port, at least one third passage connecting said first and second passages; and an insulating collar mechanically connecting the two electrode parts to each other.
Claim 2
Dependent Claim
123 words
A power semiconductor device comprising: a semiconductor junction section; two first electrode parts having their inner sides attached to opposite sides of the semiconductor junction section; two second electrode parts attached to the outer sides of the respective first electrode part and each second electrode part defining a system of hollow spaces therein, said system of hollow spaces of the second parts have first passages disposed in a first plane and second passages disposed in a second plane, said first and second planes being parallel to said semiconductor junction section and are provided with an inlet and outlet port, at least one third passage connecting said first and second passages; and an insulating collar mechanically connecting the two electrode parts to each other.
Claim 3
Dependent Claim
20 words
The power semiconductor device as set forth in claim 1, wherein the first electrode parts are of circular disc shape.
Claim 4
Dependent Claim
27 words
The power semiconductor device as set forth in claim 2, wherein one plane of hollow spaces in the second part is covered by the corresponding first part.
Claim 5
Dependent Claim
39 words
The power semiconductor device as set forth in claim 3, wherein the one plane of hollow spaces forms a plurality of concentric channels in the second part and each channel being connected to the inlet and the outlet port.
Claim 6
Dependent Claim
26 words
The power semiconductor device as set forth in claim 3, wherein the concentric channels are connected by two or more connecting conduits to two respective ports.
Claim 7
Dependent Claim
33 words
The power semiconductor device as set forth in claim 5, comprising: a fitting attached to the insulating ring; and a shoulder around the circumference of the second part rigidly connected to the fitting.
Claim 8
Dependent Claim
35 words
The power semiconductor device as set forth in claim 5, wherein the respective first and second parts are circular and the second parts respectively have fittings for the inflow and outflow of a cooling fluid.
Claim 9
Dependent Claim
33 words
The power semiconductor device as set forth in claim 1, wherein one of the first parts comprises: a hollow conduit for providing a connection for a control electrode or for its contact system.
References Cited (Backward Citations)
US4028723A
Cited
US3978518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |