Contact lens mould

Details Contact lens mould Contact lens mould

1995-06-06

1996-11-26

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

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

With shrinkage compensation means

425408, 425412, 425808, 249 82, 249121, 249141, 2643287, B29C 4354

Patent

active

055783325

ABSTRACT:
A mould for cast moulding a contact lens includes a first cup member having a male mould surface and a second cup member with a female mould surface. The two cup members form a piston and cylinder and are used in a pressure vessel so as to apply loading pressure to deflect the mould surfaces to maintain the surfaces in contact with a lens being cast. The mould is opened with the mould surface facing upwardly. Hydrating fluid is added to the first cup member and a cover sealed to the top of the first cup member.

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Patent Abstracts of Japan, vol. 8, No. 227 (M-332) [1664], Oct. 18, 1984; JP-A-59 109,325 (Olympus) 25 Jun. 1984, Abstract.
Japanese Application No. 58-29627 Filed Feb. 1983, Takmura.

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