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:
Feb. 12, 1991
Filed:
Apr. 23, 1990
Applicant:
Inventor:
Takashi Matsubara, Tokyo, JP;
Assignee:
Niko Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354250 ;
Abstract
A light-shielding blade made of a carbon fiber-reinforced plastic plate, composed of three or more reinforced plastic sheets each of which consists of continuous carbon fibers aligned in one direction and matrix resin enveloping the carbon fibers and which are plane symmetrically laminated in such a manner that the directions of fibers of the sheets are mutual substantially perpendicular. The carbon fiber-reinforced plastic plate has a thickness in a range of 60 to 120 .mu.m, and carbon black is incorporated only in the outermost ones of the sheets constituting the plate, a black coating of a thickness of 0.1 to 3 .mu.m is provided on each surface of the plate.