Removable rigid support structure for circuit cards

Details Removable rigid support structure for circuit cards Removable rigid support structure for circuit cards

1990-06-11

1991-04-23

Foster, Jimmy G.

Special receptacle or package

For a vehicle

53449, 206334, B65D 8106

Patent

active

050093118

ABSTRACT:
Vibration and shock protection is provided for circuit cards by means of a sealed compliant bag which holds a supply of catalyst and resin which when mixed together form a foam which expands and becomes rigid upon curing. Initially, the catalyst and resin are maintained separated within the bag. Upon assembly, the catalyst and resin are mixed within the bag and the bag is placed within a housing. The circuit card is then installed in the housing. Formation and expansion of the foam causes the bag to conform to the top surface of the components mounted on the circuit card.

REFERENCES:
patent: 3346221 (1967-10-01), Farmer
patent: 3415364 (1968-12-01), Schneider
patent: 3485347 (1969-12-01), McGill et al.
patent: 4193499 (1980-03-01), Lookholder
patent: 4232788 (1980-11-01), Roth
patent: 4267927 (1981-05-01), English, Jr.
patent: 4865197 (1989-09-01), Craig
patent: 4889750 (1989-12-01), Wiley

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