The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1984
Filed:
Jun. 01, 1983
Wan C Wong, North Point, HK;
Shigeru Oshima, Tokyo, JP;
W. Haking Enterprises Limited, Hong Kong, HK;
Abstract
A disc camera advances a film disc by an oscillating pawl engaging the disc film notches previously used for indexing. The pawl is carried on a member pivotably mounted on the side of the rear film chamber wall remote from the chamber and passing through an opening in this wall. The limits of movement of this member are determined by the height of a lobe of a rotating cam driving the pawl system and by other mechanical limit stops. An end-of-film sensing pin is provided which passes through the rear film chamber wall of the camera and engages the face of the film disc hub directly. When the pin drops into the film disc hub, the film advance motor circuit is rendered inoperative. A single printed circuit board placed near and parallel to the side of the film chamber wall remote from the film chamber carries the DC motor, shutter-cocking and the pawl-oscillating mechanism. The pawl carrying member is pivoted on this wall. A film flattening shroud frame on the rear chamber wall has only its tangentially disposed faces or edges contacting the film disc so that the other two margins thereof do not contact the portion of the film to be exposed during film advancement.