Dual motor reversible drive film magazine

Details Dual motor reversible drive film magazine Dual motor reversible drive film magazine

1984-02-10

1986-03-18

Hayes, Monroe H.

Optics: motion pictures

Removable film strip magazine type

Magazines

352124, 352171, 352173, 352172, G03B 2302

Patent

active

045764557

ABSTRACT:
A film magazine is provided adapted for running the film stored therein either forward or backward. A first brake within the film magazine provides a drag torque on the supply hub when the supply hub rotates in the forward direction but not when it is rotating in a backward direction. In addition, a second brake is provided for exerting a drag torque on the take-up reel when the take-up reel is rotating in a backward direction, but not when it is running forward.
The brakes and motors within the film magazine are adapted so as to keep tension on the film at all time.

REFERENCES:
patent: 3410498 (1968-11-01), Winkler et al.
patent: 3734602 (1973-05-01), Deck
patent: 3771862 (1973-11-01), Land et al.
patent: 3883090 (1975-05-01), Hall, Sr.
patent: 3977776 (1976-08-01), Wagensonner et al.
patent: 4174888 (1979-11-01), Hunn et al.
patent: 4316656 (1982-02-01), Ishibashi et al.
patent: 4368961 (1983-01-01), Mattes
patent: 4418994 (1983-12-01), Gottschalk et al.
patent: 4466714 (1984-08-01), Dyfverman
patent: 4483599 (1984-11-01), Macrae et al.

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