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:
Nov. 05, 2002
Filed:
Sep. 29, 2000
Applicant:
Inventors:
Mitsuo Manabe, Omiya, JP;
Mitsuhiko Oka, Omiya, JP;
Assignee:
Fuji Photo Optical Co., Ltd., Saitama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 1/310 ; G03B 1/700 ;
U.S. Cl.
CPC ...
G03B 1/310 ; G03B 1/700 ;
Abstract
A view frame changing apparatus of the present invention is constructed in which cam grooves formed at view frame pieces are arched by the predetermined curvature; thus the cam pins can smoothly slide over the entire area of the sliding area of the cam grooves without being caught in the cam grooves. Moreover, the cam grooves are formed in areas of acute angles in between the two diagonal lines of the image frame; therefore, the frame changing apparatus can be compact in size.