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:
Dec. 21, 1982
Filed:
Jul. 01, 1981
Michio Senuma, Tokyo, JP;
Fumio Shimada, Kawasaki, JP;
Yoshihiro Shigeta, Tokyo, JP;
Syuichiro Saito, Kawasaki, JP;
Hiroshi Aizawa, Kawasaki, JP;
Takehiko Ohniwa, Chichibu, JP;
Canon Denshi Kabushiki Kaisha, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, US;
Abstract
In a shutter of the electromagnetic release type arranged to have shutter blades locked by locking members in their charged states and to make an exposure by releasing the shutter blades from the locking members, a first locking member is arranged to lock each of the charged shutter blades while a second locking member is arranged to lock the shutter blade when the shutter blade is released from the first locking member and to have the shutter blade released therefrom by the action of an electromagnet. The releasing torque required for the second locking member is smaller than that of the first locking member.