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:
Aug. 23, 1988
Filed:
Jan. 27, 1987
Applicant:
Inventors:
Yoshiharu Shiokama, Kawasaki, JP;
Sachio Ohmori, Yokosuka, JP;
Assignee:
Nippon Kogaku K. K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354286 ;
Abstract
A bayonet mount structure for an interchangeable photographic lens unit comprises cooperable lens unit and camera mounts with an optimum arrangement of bayonet pawls, a lock slot and pin for determining rotational position, coupling shafts through which a driving force for auto-focusing is transmitted to the lens unit, electrical contacts for transmitting electrical signals between the lens unit and the camera body, and a mechanical signal surface and signal detector for transmitting optical performance information, such as minimum F-number of the lens unit, to the camera body.