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. 19, 1981
Filed:
Jun. 23, 1980
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354147 ; 354246 ; 354252 ;
Abstract
A focal plane shutter device of the present invention is provided with leading blade braking means arranged near the terminal end of running down movement of the leading blades of the focal plane shutter to stop said leading blades in a standstill position either directly or through a member cooperative with the leading blades, and brake releasing means arranged in the trailing blades of the shutter upon termination of running down movement of the trailing blades to release the above-described leading blade braking means. Another feature is that the member cooperative with the leading blades in the standstill position and the braking member form a synchro-contact for use in flash photography.