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:
Jun. 17, 1980
Filed:
Mar. 09, 1979
Kiyoshi Kitai, Yotsukaido, JP;
Yukio Morino, Yotsukaido, JP;
Shogo Kato, Yotsukaido, JP;
Masanori Watanabe, Yotsukaido, JP;
Seiko Koki Kabushiki Kaisha, , JP;
Abstract
In an electronic program shutter having sectoral shutter blades functioning in varying both the aperture and the exposure time corresponding to the brightness of the field, a synchronizing device according to the present invention comprises a sectoral shutter blade control lever which is oscillatable and capable of opening and closing the sectoral shutter blades and is normally urged in the direction that the sectoral shutter blades keep the aperture closed, a driving member which travels in one direction according to the shutter release operation, an actuating lever rotatable about a shaft fitted on the driving member and interlocked with the sectoral shutter blade control lever, an electromagnet which is unmagnetized at an exposure completion signal given by an exposure control circuit, and an armature which operates a flash light switch and cancels the engagement between the sectoral shutter blade control lever and the actuating lever when the electromagnet is unmagnetized and the attraction by the electromagnet is cancelled.