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:
Jul. 27, 1976
Filed:
Jun. 20, 1974
Applicant:
Inventor:
Leon Rubinstein, Natick, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29D / ;
U.S. Cl.
CPC ...
264275 ; 264334 ; 249 59 ; 249 95 ; 425808 ; 425438 ;
Abstract
Molding devices and methods for producing a low cost, multi-element, adjustable focus lens assembly for use in photographic apparatus. The assembly features a two-part molded plastic lens mount comprising forward and rear mounts, each having an uncentered lens element insert molded and centered therein and an integrally molded screw thread for coupling the forward and rear mounts together. The molding devices comprise cavity molds having movably mounted zonal clamps therein for centering the lens element within the cavity and for disengaging the molded mounts from surfaces in the molds that form the screw threads.