Method for molding lenses

US5271875A · kind A · utility

Assignee

• BAUSCH & LOMB INCORPORATED · US

Inventors

• William J. Appleton · Rochester, US
• Dennis Hahn · Solingen, DE
• William E. Moucha · Bergen, US
• Dominic V. Ruscio · Webster, US
• John H. Shannon · Hamlin, US
• Steven D. Silbermann · Rochester, US
• Edwin W. Weaver, Jr. · Caledonia, US

Key dates

• Filing date: Sep 12, 1991
• Grant date: Dec 21, 1993
• Expiry date: Sep 12, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S425/808
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A mold assembly includes first and second mold sections having respective first and second mold cavity defining surfaces, the first mold cavity defining surface terminating in an encircling peripheral rim and the second mold cavity defining surface terminating in a deformable peripheral annulus disposed at a diameter corresponding to the rim, and cooperating tapers depending from each of the first and second molds for relatively centering the molds.