Very high-acceleration tolerant circuit card packaging structure

Details Very high-acceleration tolerant circuit card packaging structure Very high-acceleration tolerant circuit card packaging structure

1988-01-21

1990-01-02

James, Andrew J.

357 81, H01L 2338, H01L 2344, H01L 2346

Patent

active

048916889

ABSTRACT:
A very high acceleration tolerant packaging structure 10 for protecting electronic circuit elements such as printed circuit cards 35 or ceramic cards. A rigid housing 15 has at least one planar member 35 for supporting electronic circuitry thereon, mounted within the housing so as to divide the interior of the housing into at least two chambers 50, 52. Each chamber is completely filled with a substantially incompressible fluid 60 so as to leave no air spaces or voids. The fluid in one chamber communicates with the fluid in another chamber only at a controllable rate. Preferably the planar members 35 have substantially the same shape as the cross sectional shape of the interior of the packaging system.

REFERENCES:
patent: 3851221 (1974-11-01), Beaulieu et al.
patent: 4399484 (1983-08-01), Mayer
patent: 4450505 (1984-05-01), Mittal et al.
patent: 4468717 (1984-08-01), Mathias et al.
patent: 4694378 (1987-09-01), Nakayama et al.
patent: 4706091 (1987-10-01), Longerich
patent: 4739443 (1988-04-01), Singhdeo

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