Electricity: conductors and insulators – Feedthrough or bushing – Compression
Patent
1976-11-26
1978-08-01
James, Andrew J.
Electricity: conductors and insulators
Feedthrough or bushing
Compression
357 79, 357 68, 174 52S, 165 80, H01L 2302, H01L 2348, H01L 2944
Patent
active
041046773
ABSTRACT:
A flat surface of a planar power semiconductive element, such as a thyristor or diode, is adjustably urged downwardly against a heat sink in electrical and thermal contact therewith by means of a spring-loaded eccentric element. The spring extends transversely over the opposite surface of the semiconductive element between a pair of anchor members carried by the heat sink. The eccentric is secured to an intermediate portion of the transversely extending spring, and is adapted to rotate in a vertical plane whereby successive portions of the eccentric periphery are urged with different pressures downwardly against the opposed surface of the semiconductive element, either directly or through an insulating spacer element. If desired, a pair of flattened abutment areas may be established on diametrically opposed portions of the eccentric periphery to correspondingly define a two-position stable adjustment of the bearing pressure.
REFERENCES:
patent: 3226466 (1965-12-01), Martin
patent: 3436603 (1969-04-01), Vogt
patent: 3467897 (1969-09-01), Hoffmann et al.
patent: 3624452 (1971-11-01), Hayward
patent: 3688159 (1972-08-01), Robbins
patent: 3715632 (1973-02-01), Warburton
patent: 3743893 (1973-07-01), Yamomoto
patent: 3808471 (1974-04-01), Grandia
Kafunek Pavel
Kovar Jiri
Kratina Jindrich
Pellant Michal
Pokorny Oldrich
CKD PRAHA, Oborovy podnik
James Andrew J.
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