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:
Oct. 07, 1997
Filed:
Oct. 17, 1995
Applicant:
Inventors:
Yutaka Ishizuka, Nagano, JP;
Shinji Ohta, Nagano, JP;
Assignee:
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359216 ; 359850 ; 359855 ; 359871 ; 359900 ;
Abstract
A blank is formed of a sintered alloy by sintering a mixture of powdered materials including powdered aluminum, and at least one of powdered silicon, powdered magnesium, and powdered chromium. This blank, being made of the sintered body, can be molded into a shape close to the final shape of a rotary polygon mirror. For example, a mirror surface can be molded into a desired shape in advance. Therefore, the final product of the rotary polygon mirror can be obtained with ease by subjecting the blank to a simple finishing process by cutting.