Camera having an electrically timed shutter

Details Camera having an electrically timed shutter Camera having an electrically timed shutter

1978-02-14

1979-07-10

Griffin, Donald A.

354246, G03B 908, G03B 940

Patent

active

041605918

ABSTRACT:
A camera with a shutter including opening and closing blades releasable, respectively, in response to a mechanical actuation and exposure control circuit for making an exposure which is assured by energizing the solenoid of an electromagnet with power supply from a battery. When the voltage of the battery drops below a satisfactory operating level, the opening blade is locked in automatic response to the mechanical actuation, and a shutter charging and film winding mechanism is no longer effective to operate, thereby preventing wasteful consumption of film due to blank exposures. Upon removal of the battery from a chamber therefor, the shutter charging and film winding mechanism is rendered again effective, and the release of the closing blade is mechanically retarded for a certain length of time from the mechanical release actuation of the opening blade.

REFERENCES:
patent: 3082673 (1963-03-01), Takahama
patent: 3715959 (1973-02-01), Harvey
patent: 3777646 (1973-12-01), Shimizu
patent: 3829877 (1974-08-01), Kitai
patent: 3952317 (1976-04-01), Galbraith
patent: 3964081 (1976-06-01), Pickering

Affiliated with

Also associated with

Rating

Camera having an electrically timed shutter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Camera having an electrically timed shutter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera having an electrically timed shutter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-737703