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. 14, 2000
Filed:
Jan. 23, 1997
Applicant:
Inventors:
Naoyuki Murakami, Kawasaki, JP;
Masaru Shida, Tokyo, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396486 ; 396357 ;
Abstract
A focal plane shutter unit includes two pairs of blade units consisting of a plurality of light shielding thin plates, a first plate having a first aperture, a second plate having a second aperture, disposed in a face-to-face relationship with the first plate, and having a part of a film passage path in a surface opposite to the surface on which the first plate is disposed, and a blade housing unit for housing the two pairs of blade units disposed in between the first plate and the second plate.