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:
Nov. 30, 2010
Filed:
Oct. 29, 2004
Shinichiro Kadowaki, Tokyo, JP;
Toshihisa Kawakami, Tokyo, JP;
Shinichiro Kadowaki, Tokyo, JP;
Toshihisa Kawakami, Tokyo, JP;
Hoya Corporation, Tokyo, JP;
Abstract
A mold () for molding a plastic lens is formed of a first mold () which forms one lens surface of the plastic lens, a second mold () which forms the other lens surface of the plastic lens, and a cylindrical gasket () into which the first and second molds () are to be pressed. An elastically deformable projecting band () which has a triangular section and tapers gradually toward its distal end integrally projects on the inner circumferential surface of the gasket (). The projecting band () projects on the inner circumferential surface of the gasket () throughout an entire circumference to form a ring-like shape, and inclines upward with respect to an axis (L) of the gasket (). The first mold (), when pressed into the gasket (), presses the projecting band () to elastically deform it downward.