Mold, molding system and molding machine for making ophthalmic devices
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsVictor Lust, Philip K. Parnell, Kornelis Renkema, Jan van Lievenoogen, Will van Kraay
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Abstract
This invention provides a mold comprising a first mold half which works in conjunction with a second mold half for forming ophthalmic devices wherein said first mold half comprises at least one changeable cassette comprising inserts for forming said ophthalmic devices. The mold is particularly well-suited for use in an injection molding machine.
Claims66
A mold for forming ophthalmic devices comprising:
- a first mold half which works in conjunction with a second mold half, wherein said second mold half comprises inserts, and said first mold half comprises a base, attachment means, and at least one changeable cassette removably attached by said attachment means to said molding base, said at least one changeable cassette comprising a surface not in contact with said molding base and inserts, wherein said attachment means are accessible on said surface of said changeable cassette not in contact with said base, and further wherein said inserts in said at least one changeable cassette comprise optical quality surfaces.
A molding system for forming ophthalmic devices comprising a mold comprising a first mold half and a second mold half, wherein said first mold half comprises at least one changeable cassette, and said molding system further comprises at least one more said changeable cassette than the number of said changeable cassettes that are removably attached to said first mold half when in use, said changeable cassettes comprising differently shaped inserts, and further wherein said inserts in said changeable cassettes comprise optical quality surfaces, and said second mold half comprises inserts that with said inserts in said changeable cassettes define a cavity in which said ophthalmic devices are formed.
A molding system for forming ophthalmic devices comprising a plurality of first mold halves comprising inserts comprising optical quality surfaces, and a second mold half comprising inserts, and a plurality of cassettes comprising inserts, said cassettes being removably attached to said first mold halves, wherein each of said first mold halves work in conjunction with said second mold half to make different shaped ophthalmic devices, and further wherein said molding system comprises at least one more changeable cassette than the number of said changeable cassettes that are removably attached to said first mold half when in use with said second mold half.
Dependencies are inferred from the claim text.