B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
B29D 11/00 (2006.01) B29C 33/04 (2006.01) B29C 33/20 (2006.01) B29C 33/44 (2006.01) B29C 33/46 (2006.01)
Patent
CA 2151360
An apparatus for separating individual contact lens mold assemblies. Each of the assemblies has a contact lens mold between a front curve half and a back curve mold half. Each of the mold halves have annular circumferential flanges. The apparatus applies steam at a first temperature to the back curve mold half to form a temperature gradient between the back mold half relative to the front curve mold half, wherein the temperature gradient ranges from about 2.5°C to 6.0°C. The demolding is effected by a prying element inserted between the circular circumferential flanges of each of the front mold and back mold halves of the contact lens mold assembly. The prying device includes a first set of pry fingers for retaining the front curve mold half and a second set of pry fingers for biasing the back curve mold half upwardly at a predetermined force with respect to the front curve hold half to effectively remove the back mold half therefrom.
Beaton Stephen Robert
Kindt-Larsen Ture
Martin Wallace Anthony
Pegram Stephen Craig
Walker Craig William
Johnson & Johnson Vision Care Inc.
Johnson & Johnson Vision Products Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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