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:
May. 24, 1983
Filed:
Jun. 17, 1981
Applicant:
Inventor:
Akiyasu Sumi, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29D / ;
U.S. Cl.
CPC ...
264221 ; 29423 ; 29424 ; 295271 ; 264161 ; 264242 ; 264317 ;
Abstract
A lens barrel assembly consisting essentially of a first and second barrel member having helicoid screw threads therebetween which enable said barrel members to be moved axially upon relative rotation therebetween is formed in a molding process wherein one of said barrel members is utilized as a mold element in the formation of the other barrel member with the other barrel member being formed by injection molding of resin material injected into a cavity defined at least in part by the first barrel member. The lens barrel assembly is formed with the barrel members in operative juxtaposition when they are removed from the mold cavity.