Optical component molding apparatus for following the differenti

Details Optical component molding apparatus for following the differenti Optical component molding apparatus for following the differenti

1983-07-15

1986-03-04

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With shrinkage compensation means

264 22, 425411, 425808, B29D 1100

Patent

active

045739030

ABSTRACT:
A device suitable for molding ophthalmic lenses comprises two spaced mold parts in face-to-face relationship inside a cylindrical sleeve. One or both parts comprise a rigid supporting base, a molding die of an elastically deformable material and an intermediate pad of an incompressible elastic material disposed between the base and the die and completely covering their respective surfaces.

REFERENCES:
patent: 2253697 (1941-08-01), Genesy
patent: 2333131 (1943-11-01), Tillyer et al.
patent: 2443826 (1948-06-01), Johnson
patent: 2478165 (1949-08-01), Collins
patent: 2869179 (1959-01-01), Van Hartesveldt
patent: 3945790 (1976-03-01), Puech
patent: 4231730 (1980-11-01), Birt
patent: 4402659 (1983-09-01), Greenbaum
patent: 4474355 (1984-10-01), Greshes

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