Title: Arrangement for adjustably urging a semi-conductive element against a heat sink

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Claims: What is claimed is:

1. In an arrangement for adjustably urging a first surface of a planar semiconductive element disposed above a heat sink downwardly against the underlying heat sink, a pair of spaced anchor elements associated with the heat sink and projecting above a second opposite surface of the semiconductive element, an elongated resilient member extending transversely between and secured on opposite ends to the respective anchor elements above the second surface of the semiconductive element, eccentric means carried on the resilient member intermediate its ends above the second surface of the semiconductive element for rotation in a vertical plane against the biasing force of the resilient member, and means associated with the eccentric means for contacting the underlying second surface of the semiconductive element with a variable downward pressure corresponding to the rotation of the eccentric to correspondingly urge the first surface of the semiconductive element against the heat sink.

2. An arrangement as defined in claim 1, in which the resilient member is a flat spring having a first longitudinal axis.

3. An arrangement as defined in claim 1, in which the contacting means is defined by at least one peripheral region of the eccentric means.

4. An arrangement as defined in claim 1, in which the contacting means comprises an insulating spacer interposed between the periphery of the eccentric means and the second surface of the semiconductive element.

5. An arrangement as defined in claim 2, further comprising a hollow cylindrical element extending around and secured to the flat spring, and means for securing the outer surface of the cylindrical element to the eccentric means.

6. An arrangement as defined in claim 2, in which the eccentric means has first and second substantially planar peripheral regions disposed on respectively opposite sides of the first axis at different distances therefrom.

7. An arrangement as defined in claim 1, further comprising an operating member secured to the eccentric means for effecting rotation thereof against the biasing force of the resilient member.

Other info:

Inventors: Kovar, Jiri (Prague, CS)
Kafunek, Pavel (Prague, CS)
Reichel, Pavel (Prague, CS)
Pokorny, Oldrich (Prague, CS)
Pellant, Michal (Prague, CS)
Kratina, Jindrich (Prague, CS)
Zuna, Jaroslav (Prague, CS)

Application Number: 745201
Filing Date: 1976-11-26
Publication_date: 1978-08-01
Assignee: CKD Praha, oborovy podnik (Prague, CS)
Primary Class(es): 257/718 165/80.2, 174/52.3, 257/E23.084
Other Classes:
US Patent Ref:

3226466	Dec, 1965	Martin	357/81.
3436603	Apr, 1969	Vogt	357/81.
3467897	Sep, 1969	Hoffmann et al.	357/81.
3624452	Nov, 1971	Hayward	357/81.
3688159	Aug, 1972	Robbins	357/81.
3715632	Feb, 1973	Warburton	357/81.
3743893	Jul, 1973	Yamomoto	357/81.
3808471	Apr, 1974	Grandia	357/81.

Other Refs: 439,034

Jan, 1975	SU

Primary Examiner: James, Andrew J.
Assistant Examiner:
Attorney: