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. 11, 2004
Filed:
Feb. 06, 2003
Kazuo Kamata, Minami-Ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A shutter device has a front blade which is biased by a spring to a closed position for closing an exposure aperture, and a rear blade biased by a spring to an open position for opening the exposure aperture. A shutter drive lever kicks the front blade and the rear blade successively while moving to one direction. As soon as the front blade opens the exposure aperture, the rear blade closes the exposure aperture. And while the rear blade is biased by the spring to return to the initial position before opening the exposure aperture, the front blade is biased by the spring to close the exposure aperture. When the front blade and the rear blade return to the initial position by the urge of the spring, the two blades return with partly overlapped each other.