Precalibrated element for securing and locking semiconductors an

Details Precalibrated element for securing and locking semiconductors an Precalibrated element for securing and locking semiconductors an

1984-08-13

1987-01-13

Pellinen, A. D.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

357 79, 357 81, 361383, H05K 720

Patent

active

046369171

ABSTRACT:
In electrical apparatus of the type having a column of stacked semiconductors and interposed heat sinks mounted between a pair of end plates, a precalibrated clamping element is provided for applying a predetermined clamping force to one end of the column to secure the column between the end plates. A hollow cylindrical body of the clamping element threads into one of the end plates and houses a spring which has been placed in precalibrated compression by a press. The spring is retained in a precalibrated state between a shoulder portion of a piston within the body and a fixed inner surface of the body. A cap is secured to an end of the body and is positioned to abut the shoulder to retain the spring in the precalibrated state. To apply the predetermined force to the column, the cylindrical body is threaded toward the second end plate with a head portion of the piston supporting the column to achieve a specific positional relationship between the body and the piston in which the spring exerts the predetermined force on the piston shoulder.

REFERENCES:
patent: 3523215 (1970-08-01), Steinmetz, Jr. et al.
patent: 3864607 (1975-02-01), Phillips
patent: 3943426 (1976-03-01), Thiele et al.

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