Focal-plane shutter

Details Focal-plane shutter Focal-plane shutter

1982-05-10

1984-08-21

Gonzales, John

G03B 934

Patent

active

044667205

ABSTRACT:
A focal-plane shutter comprises first leading and trailing cylinders rotatably disposed on the winding side and fitted with leading and trailing screens, respectively, second leading and trailing cylinders rotatably disposed on the charge side and fitted with the leading and trailing screens, respectively, gears for rotating the first leading and trailing cylinders so that the first leading and trailing cylinders are wound with the leading and trailing screens, respectively, and charge springs for rotating the second leading and trailing cylinders at shutter release so that the second leading and trailing cylinders are wound with the leading and trailing screens, respectively. The first and second leading cylinders are substantially coaxial with said first and second trailing cylinders, respectively.

REFERENCES:
patent: 2134766 (1938-11-01), Schieber et al.
patent: 2866398 (1958-12-01), Maurer
patent: 3468236 (1969-09-01), Rentschler et al.
patent: 3682073 (1972-08-01), Dahlgren
patent: 4164370 (1979-08-01), Kimura et al.
patent: 4359278 (1982-11-01), Hashimoto

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