Test fixture

Details Test fixture Test fixture

1996-10-31

1999-04-13

Karlsen, Ernest F.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

3241581, G01R 1073, G01R 3102

Patent

active

058942254

ABSTRACT:
A test fixture for printed circuit boards wherein the circuit board being tested is clamped to a vacuum actuated diaphragm plate by the same vacuum that actuates the diaphragm plate. The vacuum is automatically applied to both the diaphragm plate and the clamp means when the cover on the test fixture is closed. A bridge extends over, and is in clamping contact, with the circuit board. The bridge is supported from platens in vacuum chambers on the upper side of the diaphragm plate.

REFERENCES:
patent: 2918648 (1959-12-01), Ludman et al.
patent: 4536051 (1985-08-01), Smith et al.
patent: 4636723 (1987-01-01), Coffin
patent: 4643501 (1987-02-01), Coffin
patent: 4746861 (1988-05-01), Nesbitt
patent: 5087878 (1992-02-01), Belmore, III et al.
patent: 5214374 (1993-05-01), St. Onge
patent: 5247249 (1993-09-01), Seavey
patent: 5396186 (1995-03-01), Schentzow
patent: 5430385 (1995-07-01), Hutton et al.

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