In-circuit test apparatus for printed circuit board

Details In-circuit test apparatus for printed circuit board In-circuit test apparatus for printed circuit board

1983-04-11

1985-08-27

Levy, Stewart J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324 73PC, G01R 3102

Patent

active

045381046

ABSTRACT:
An in-circuit test apparatus having a vacuum chamber between a top plate and a base plate. The apparatus has an adjustable bearing block assembly located at each quandrant to provide a precision alignment between the top plate and the base plate. A continuous double-hollow tube is located in a uniform groove in the base plate and forms a seal when held captive between the top plate and the base plate. A plurality of spring probe pressure pins are mounted within the chamber. The pins project through drilled individual access ports in the top plate and make electrical contact with a printed circuit board under test when the top plate collapses under a vacuum.

REFERENCES:
patent: 2607966 (1952-08-01), Beck
patent: 4322682 (1982-03-01), Schadwill
patent: 4344033 (1982-08-01), Stowers et al.
patent: 4352061 (1982-09-01), Matrone
patent: 4357062 (1982-11-01), Everett

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