Device for closing and opening vacuum x-ray film holders

Details Device for closing and opening vacuum x-ray film holders Device for closing and opening vacuum x-ray film holders

1975-03-12

1976-02-24

Borchelt, Archie R.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

250475, G03B 4116

Patent

active

039406296

ABSTRACT:
A device for closing and opening X-ray film holders is provided with a pressure plate and a flexible partition separating the device into a main compartment and an auxiliary compartment. Each of said compartments is provided with means allowing the particular compartment to be evacuated and to be exposed to air under atmospheric pressure, irrespective of the condition of vacuum and/or pressure prevailing in the other of said compartments.

REFERENCES:
patent: 2566266 (1951-08-01), Uhle et al.
patent: 3392281 (1968-07-01), Sherwood
patent: 3535518 (1970-10-01), Fisher
patent: 3884818 (1975-05-01), Tomita et al.

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