Film rewind device in a camera

Details Film rewind device in a camera Film rewind device in a camera

1980-03-28

1982-03-09

Adams, Russell E.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 716, G03B 100, G03B 104

Patent

active

043186033

ABSTRACT:
A film rewind device in a camera in which a rewind coupling is automatically engaged with a cassette shaft in response to rewind operation has a rotatable member having a spiral groove on its peripheral wall portion and said rewind coupling at the end of the shaft thereof, the rotatable member being slidable in axial direction and rotatable by rewind operation, and a meshing member meshing with the spiral groove at the initial stage of the rewind operation to thereby slide the rotatable member in axial direction to cause the coupling to engage the cassette shaft. The mesh engagement between the meshing member and the spiral groove is released in axial direction when the coupling engages the cassette shaft, so that the meshing member comes to support the rotatable member so as to block the return of the rotatable member in axial direction.

REFERENCES:
patent: 3679148 (1972-07-01), Daitoku et al.
patent: 3735683 (1973-05-01), Umeda
patent: 4149793 (1979-04-01), Date
patent: 4222651 (1980-09-01), Urano et al.

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