Film cassette with flanged film spool

Details Film cassette with flanged film spool Film cassette with flanged film spool

1991-11-04

1993-05-11

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 718, 354275, G03B 1726

Patent

active

052094197

ABSTRACT:
In a film cassette, a flange has a central opening into which a spool core for a filmstrip extends to allow rotation of the spool core relative to the flange in film unwinding and film winding directions. According to the invention, a locking pawl supported on a resilient cantilever of the flange biases the locking pawl into the central opening to move from the periphery of the spool core into a cut-out in the spool core to engage with the spool core when the spool core is rotated relative to the flange in the unwinding direction and to allow the locking pawl to move out of the cut-out to disengage the spool core when the spool core is rotated relative to the flange in the winding direction.

REFERENCES:
patent: 4991786 (1991-02-01), Cloutier
patent: 5031852 (1991-07-01), Dowling et al.
patent: 5031853 (1991-07-01), Jensen
patent: 5031855 (1991-07-01), Wolf et al.
patent: 5040739 (1991-08-01), Wolf et al.
patent: 5046679 (1991-09-01), Wolf et al.
patent: 5049913 (1991-09-01), Pagano
patent: 5115268 (1992-05-01), Kiragawa

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