Rotatable mount for film cassette

Details Rotatable mount for film cassette Rotatable mount for film cassette

1979-10-15

1981-11-10

Church, Craig E.

Radiant energy

Luminophor irradiation

Self-luminous article

G03B 4116

Patent

active

043000533

ABSTRACT:
A rotatable cassette holder is disclosed which avoids the necessity of having to remove the cassette and grid from the cassette holder in order to reposition them in a different orientation. Prior art cassette holders were capable of holding the cassette and grid in only two orientations, and to change orientation necessitated removing the cassette and grid from the cassette holder, turning them, and inserting them back into the cassette holder. In this process the expensive and fragile grid was sometimes accidentally dropped and broken. To avoid this possibility inherent in the prior art cassette holders, the cassette holder of the present invention is rotatable to permit the cassette and grid to be reoriented without having to be removed from the cassette holder. In a preferred embodiment, the extent of the orientation is limited by stops and repeatable positioning is achieved by an indexing mechanism employing a detent.

REFERENCES:
patent: 2291139 (1942-07-01), Borthwick
patent: 2919625 (1960-01-01), Muller
patent: 3771781 (1973-11-01), Lackey

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