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:
Sep. 26, 2000
Filed:
Aug. 06, 1998
Fumio Shimada, Chichibu, JP;
Canon Denshi Kabushiki Kaisha, Saitama-ken, JP;
Abstract
A shutter device functioning as a focal-plane shutter device for cameras, includes a shutter blade, a base plate, a first arm member and a second arm member. The first arm member has one end portion rotatably fitted to the shutter blade and further has the other end portion rotatably fitted to the base plate, while the second arm member has one end portion rotatably fitted to the shutter blade and further has the other end portion rotatably fitted to said base plate. In this shutter device, the distance between the center of rotation of the first arm member with respect to the shutter blade and the center of rotation of the second arm member with respect to the shutter blade is set to be different from the distance between the center of rotation of the first arm member with respect to the base plate and the center of rotation of the second arm member with respect to the base plate.