Exposure control system with selectively presentable inertia mem

Details Exposure control system with selectively presentable inertia mem Exposure control system with selectively presentable inertia mem

1975-05-27

1976-07-13

Peters, Jr., Joseph F.

354246, 354256, G03B 900, G03B 924

Patent

active

039697398

ABSTRACT:
An exposure control system for photographic apparatus is provided with an inertial member, the inertia characteristic of which may be selectively presented for movement in correspondence with the shutter blade elements of the exposure control system. The inertial member is arranged to move in correspondence with the shutter blade elements to control the rate of movement of the shutter blade elements toward their maximum aperture defining position. Conversely, return movement of the shutter blade elements toward their closed position operates to disengage the inertial member therefrom so as to allow the shutter blade elements to be quickly closed without the influence of the inertia characteristic. The inertial member is thereafter automatically returned to its initial position in readiness for subsequent movement in correspondence with the shutter blade elements upon the next photographic cycle.

REFERENCES:
patent: 3251288 (1966-05-01), Kitai
patent: 3587434 (1971-06-01), Ort
patent: 3722392 (1973-03-01), Kitai
patent: 3856393 (1974-12-01), Ogitara et al.
patent: 3873987 (1975-03-01), Brauning et al.

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