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:
Jul. 09, 1985
Filed:
Oct. 07, 1983
Harumi Tanaka, Kobe, JP;
Takashi Iwata, Sakai, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An exposure control shutter of a camera having an exposure opening, comprising first and second plane shutter blades, each shutter blade having a relatively large aperture and a relatively small aperture. The first and second shutter blades, one being disposed top of the other, are slidingly movable with respect to each other from a neutral position in which the camera exposure opening is closed to either a first exposure position in which the relatively large apertures of the first and second shutter blades meet in the camera exposure opening to define a low-speed, large-aperture-size exposure or a second exposure position in which the relatively small apertures meet in the camera exposure opening to define a high-speed, small-aperture-size exposure. A spring is provided for biasing the first and second shutter blades to maintain them in the neutral position. A transmission lever is provided for simultaneously actuating the first and second shutter blades against the spring so as to move them selectively to the first or second exposure position and for simultaneously releasing them to the neutral position.