Shutter device in a camera

Details Shutter device in a camera Shutter device in a camera

1977-10-18

1979-08-14

Gellner, Michael L.

354173, 354234, 354241, G03B 928, G03B 958

Patent

active

041643704

ABSTRACT:
A shutter device in a camera which effects photography with shutter curtains maintained open for a predetermined time comprises a rotatable member for normal rotation by a spring, shutter opening formation means operatively associated with the rotatable member to move in a direction to form a shutter opening with normal rotation of the rotatable member and to move in a direction to close the shutter opening with reverse rotation of the rotatable member, a motor, control means operatively associated with the motor to be displaceable to a first position in which it blocks normal rotation of the rotatable member and maintains the shutter opening closed, a second position in which it permits the normal rotation of the rotatable member by the bias force of the spring immediately after the motor is started, and a third position in which it transmits the drive of the motor to the rotatable member so as to reverse the rotation of the rotatable member after the normal rotation thereof, means for stopping normal rotation of the rotatable member, and motor control means for starting the motor in response to an extraneous operating signal for starting photography, for stopping the motor after the normal rotation of the rotatable member by the bias force of the spring is started, for starting the motor in response to an extraneous signal for terminating the photography, and for stopping the motor when the shutter opening has reached its closed position.

REFERENCES:
patent: 3713373 (1973-01-01), Sato
patent: 3913117 (1975-10-01), Endo et al.

Affiliated with

Also associated with

Rating

Shutter device in a camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shutter device in a camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shutter device in a camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1375351