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:
Mar. 18, 1997
Filed:
Nov. 27, 1995
Applicant:
Inventors:
Yoshihiko Aihara, Kanagawa-ken, JP;
Masayoshi Yamamichi, Kanagawa-ken, JP;
Masahisa Fujino, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396531 ;
Abstract
An optical accessory comprises a bayonet type mount which can be freely mounted by rotation to a camera body having a camera mount of a bayonet type, a switch related to a power source and an operating member for actuating the switch. The optical accessory mount has a mounting claw arranged for pushing the operating member, the length of said mounting claw being so set that the mounting claw pushes the operating member for actuating the switch when the mounting by rotation of the optical accessory to the camera body is almost completed.