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:
Aug. 19, 1980
Filed:
Nov. 24, 1978
Yasutsugu Nakagawa, Hamura, JP;
Michio Yagi, Hachioji, JP;
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
An automatic aperture driving mechanism for a camera, comprising an aperture control ring, a regulating means adapted to regulate the aperture control ring in the aperture closing direction, a reset driving means engaging the aperture control ring and a motor, an aperture ring, and an aperture driving lever operatively connected to the aperture ring and adapted to be moved together with the aperture controlling ring. The reset driving means has a gear train including gears having non-toothed portions so that the power transmitting connection of the gear train may be broken. The regulating means includes a pawl adapted to directly engage the aperture control ring so as to hold the latter in the aperture opening position, a ratchet wheel shunting from the gear train, and a regulating pawl engageable with the ratchet wheel and adapted to regulate the condition of the aperture upon engagement with the ratchet wheel.