Multiple element focal plane shutter for photographic cameras

Details Multiple element focal plane shutter for photographic cameras Multiple element focal plane shutter for photographic cameras

1975-11-10

1977-09-27

Adams, Russell E.

354245, 354246, 354248, G03B 938

Patent

active

040515028

ABSTRACT:
Two sets of lamellas are moved across the image aperture in a photographic cameras, whereby the lamellas of each set move in different but parallel planes. Each lamella is coupled to a crank pin and the pins are, on the one hand, guided for movement in parallel paths to move the lamellas of the set colinearly across the aperture while, on the other hand, the crank pins are being moved by a pivoting, slotted lever in which the pins glide. Guiding of the pins may include use of slide tracks or of linear ball bearings for guide elements carrying the pins.

REFERENCES:
patent: 3513763 (1970-05-01), Singer
patent: 3864713 (1975-02-01), Kitai et al.
patent: 3988754 (1976-10-01), Rentschler et al.

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