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RELEASING DEVICE FOR CAMERAS WITH AUTOMATIC FILM ADVANCE

  • US 3,581,647 A
  • Filed: 06/12/1968
  • Issued: 06/01/1971
  • Est. Priority Date: 06/19/1967
  • Status: Expired due to Term
First Claim
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1. In a camera apparatus having a solenoid to actuate the shutter, and a series electrical circuit to energize the solenoid which circuit includes a tripping switch, the improvement comprising:

  • shutter switch means operatively connected to the shutter for forming an electrical connection when the shutter is operated;

    a relay having a coil and contacts which are normally closed and are opened upon the energization of the coil, said contacts being in said series circuit so that the solenoid is not energized when the contacts are open; and

    circuit means connecting said coil and said shutter switch means for energizing said coil when said shutter switch means forms said electrical connection, said circuit means including means for delaying the opening of the relay contacts upon the energizing of the coil, the last means comprising an adjustable resistance-capacitor device connected in parallel with said coil.

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