Patent ID: 6869549
Filing Date: 2005-03-22
Classification: B29C,B29D,B29L,Y10S

Abstract:
1. A method of improving the release of a molded ophthalmic device from a mold comprising the steps of: providing a first mold half and second mold half each having opposing top surfaces at least one of which has been hollowed out to define a cavity for forming said ophthalmic device and at least said first mold half further defining a boundary for a release element, said boundary is part of said cavity, said release element comprising a ramped surface, said cavity having a corresponding ramped surface, said release element having its widest part near the top surface of said at least said first mold half that defines said release element therein and locating said ramped surface of said release element therein and when said device in said mold shrinks, said ramped surface uses the shrinking forces of said device to direct said device out of said first mold half.