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:
Dec. 14, 1993
Filed:
Sep. 29, 1992
Richard J Fleenor, Stafford, NY (US);
Kenneth L Opdyke, Fairport, NY (US);
Bausch & Lomb Incorporated, Rochester, NY (US);
Abstract
An improved method for generating a toric surface on a molding tool for forming contact lens molds comprises: providing a tool which comprises an elongated body and a molding portion at one end of the tool, wherein the molding portion comprises a surface which is substantially spherical; applying a force to the elongated body so as to distort the spherical surface of the molding portion; machining a substantially spherical curve in the distorted surface while maintaining the applied force; and releasing the applied force, wherein the spherically cut surface assumes a toric shape upon release of the applied force.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile