Photography – With film drive – Film movement limiting means
Patent
1998-05-27
1999-11-23
Gray, David M.
Photography
With film drive
Film movement limiting means
396440, G03B 1724
Patent
active
059915536
ABSTRACT:
In a ring-shaped resilient member, a multiplicity of protrusions inwardly extending from the inner radius are arranged substantially isometrically about the center. When a fork is rotating leftward, the protrusions extending from the resilient member fixed to the inner wall of a housing are bent in the rotation direction of the fork, so that the load imposed on the fork by the protrusions as a frictional force is light. When the rotation direction of the fork is reversed from the leftward direction to the rightward direction, the direction in which the protrusions are swung is also reversed, so that a load is imposed at this time to prevent reversal of rotation of the cartridge spool.
REFERENCES:
patent: 3938753 (1976-02-01), Oshima
patent: 4949111 (1990-08-01), Alligood
patent: 5765065 (1998-06-01), Yoshida et al.
Tanaka Yoshiharu
Tanii Junichi
Gray David M.
Minolta Co. , Ltd.
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