Mold for molding lenses

Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Coacting shaping surfaces

Reexamination Certificate

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Details

C425S397000, C425S808000, C065S286000

Reexamination Certificate

active

11433245

ABSTRACT:
An exemplary mold for molding lenses includes an upper mold core, a lower mold core, and a shell. The upper mold core has a first convex molding surface. The lower mold core has a second convex molding surface opposite to the first convex molding surface. The shell has an upper portion and a lower portion for respectively accommodating the upper mold core and the lower mold core therein. The shell has an inner step support formed between the upper portion and the lower portion.

REFERENCES:
patent: 4629489 (1986-12-01), Hirota et al.
patent: 4778505 (1988-10-01), Hirota et al.
patent: 5173100 (1992-12-01), Shigyo et al.
patent: 5380349 (1995-01-01), Taniguchi et al.
patent: 5762676 (1998-06-01), Richards et al.
patent: 6629435 (2003-10-01), Tomisaka
patent: WO97/15437 (1997-05-01), None

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