Apparatus for molding lenses
AssigneeBausch & Lomb Incorporated
InventorsWilliam J. Appleton, Dennis Hahn, William E. Moucha, Dominic V. Ruscio, John H. Shannon, Steven D. Silbermann, Edwin W. Weaver, Jr.
Life of this patent
Estimating the term…
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.
Claims40
A mold assembly for molding lenses comprising first and second mold sections having respective first and second mold cavity defining surfaces forming a mold cavity therebetween, and cooperating centering means provided for each of said first and second mold sections,
- wherein the first mold cavity defining surface of the first mold section terminates in a deformable, encircling peripheral rim, and the second mold cavity defining surface terminates in a reversely angled deformable mating surface disposed at a diameter corresponding to said peripheral rim.
A mold assembly comprising:
- an anterior mold having a rigid anterior mold cavity defining surface which terminates in an encircling peripheral rim defined by the corner of a right cylindrical wall and an outwardly extending flange, said anterior mold section further comprising a collar surrounding the peripheral rim and extending from the flange, and
- a posterior mold having a rigid posterior mold cavity defining surface which terminates in a reversely angled deformable peripheral annulus that is disposed at a diameter that corresponds to said peripheral rim,
- wherein a rigid mold cavity is defined by said anterior and posterior mold cavity defining surfaces, said mold cavity having a generally spherical surface including a central optical zone.
A mold assembly for molding lenses comprising first and second mold sections having respective first and second mold cavity defining surfaces forming a mold cavity therebetween,
- wherein the first mold cavity defining surface of the first mold section terminates in an encircling peripheral rim defined by the corner of a right cylindrical wall of the mold cavity and an outwardly extending flange, said first mold section further comprising a collar surrounding the peripheral rim and extending from the flange, and the second mold cavity defining surface terminates in a deformable mating surface disposed at a diameter corresponding to said peripheral rim.
Dependencies are inferred from the claim text.