Driving device for the elimination of the use of perforations fo

Details Driving device for the elimination of the use of perforations fo Driving device for the elimination of the use of perforations fo

1979-09-10

1982-01-26

Hayes, Monroe H.

Optics: motion pictures

Optical rectifier type

Refractor

352 14, 352 21, 242203, G03B 4104

Patent

active

043125760

ABSTRACT:
A driving device which enables the use of films with or without perforations and the driving of a perforated film without using the perforations and sprockets in movie projectors and editors with optical compensator and steady flow of the film, and any other device where the film between the two reels is driven conventionally with a perforation-sprocket system.

REFERENCES:
patent: 2243112 (1941-05-01), Morrissey
patent: 2297222 (1942-09-01), Kemna
patent: 2449705 (1948-09-01), Jones
patent: 2487476 (1949-11-01), Pratt et al.
patent: 3045937 (1962-07-01), Johnson
patent: 3141626 (1964-07-01), Hoskin
patent: 3244469 (1966-04-01), Hennessey
patent: 3262750 (1966-07-01), Bottani
patent: 4050794 (1977-09-01), Shields

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