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:
Mar. 18, 1997
Filed:
Mar. 09, 1995
Applicant:
Inventors:
Assignee:
Essilor International, Compagnie Generale d'Optique, Charenton le Pont, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-25 ; 264-22 ; 264219 ; 264230 ; 425808 ; 249 82 ; 249155 ;
Abstract
In this method of making a mold for molding an optical lens an annular closure sleeve is fitted around two molding shells and cooperates with them to define the required molding cavity. The closure sleeve is made from a heat shrinkable synthetic material and is heated to shrink it onto the molding shells. Applications of the method include molds for molding ophthalmic lenses.