Pneumatic gross leak detector

Details Pneumatic gross leak detector Pneumatic gross leak detector

1978-05-04

1979-05-15

Gorenstein, Charles

Measuring and testing

With fluid pressure

Leakage

73 494, 73 52, G01M 332

Patent

active

041540921

ABSTRACT:
A pneumatic gross leak detector for testing micro-electronic packages. The pparatus includes a frame having a vertically movable upper section and a stationary lower section. A chamber is provided with walls which are secured to the upper section for movement therewith. The chamber includes upper, lower and intermediate portions disposed in communication. A test chamber base is secured to the lower stationary section to receive the microelectronic package therein. A first piston is provided in the upper chamber portion for moving the upper frame section downwardly for sealing engagement for the lower chamber portion with the test chamber base. A second piston is provided for compressing air in the lower chamber portion to a predetermined value. A readout device communicates into the test chamber to indicate if compressed air in the lower chamber leaks into the micro-electronic package.

REFERENCES:
patent: 2329035 (1943-09-01), Cross
patent: 2467767 (1949-04-01), Mertler
patent: 2749743 (1956-06-01), Foster
patent: 3343404 (1967-09-01), La Rosa et al.
patent: 3431773 (1969-03-01), Calhoun
patent: 4047422 (1977-09-01), Lyssy

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