Patent ID: 6405993
Filing Date: 2002-06-18
Classification: B29D,Y10S

Abstract:
A cast mold for use in the manufacture of a contact lens by the polymerization of a flowable precursor, the mold comprising:a female mold part including a concave surface region adapted to receive the flowable precursor, a first flash retaining region. and a second flash retaining region; a male mold part having a convex surface region, the male mold part being engagable with the female mold part to define a lens forming recess between the concave and convex surface regions; a first overflow cavity located between the male mold part and the first flash retaining region; and a second overflow cavity located between the male mold part and the second flash retaining region; wherein the female mold part is configured to retain a first flash portion within the first flash retaining region and to retain a second separate flash portion within the second flash retaining region, and the male mold part is configured to retain a contact lens product upon separation of the male mold part and the female mold part.