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. 03, 1987
Filed:
Feb. 09, 1984
Applicant:
Inventor:
Morio Takizawa, Saitama, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350255 ; 350429 ;
Abstract
A photographing lens device having an improved sliding friction member which restrains sliding movement of a sliding ring such as a lens hood ring or a zooming ring with respect to the mating sleeve in which it is slidably received. The sliding friction member is formed of a corrugated elastic member which is bent into an annular shape and fitted into a receiving groove formed in the sliding ring. The inner surface of the elastic member may be flocked to prevent scratching.