Method and apparatus for protecting subsurface electronic assemb

Details Method and apparatus for protecting subsurface electronic assemb Method and apparatus for protecting subsurface electronic assemb

1980-06-23

1982-06-22

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

E21B 4700

Patent

active

043356028

ABSTRACT:
Electronics circuitry for obtaining measurements of subsurface formation parameters is mounted on an elongated chassis which is removably disposed within a tubular housing. One or more sets of angularly disposed ball rollers are disposed along the length of the chassis. At least one of the ball rollers comprising each set will be of the plunger type, capable of exerting a high force level due to the preloaded compression of a plurality of disk springs. The ball rollers are angularly disposed and operatively set so as to exert restraining force upon the chassis while allowing simple insertion into the housing.

REFERENCES:
patent: 1357562 (1920-11-01), Hope
patent: 1993809 (1935-03-01), Schnelle
patent: 2627759 (1953-02-01), Fincher
patent: 3339462 (1967-09-01), Bankowski
patent: 3995479 (1976-12-01), Chapman

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