Molding apparatus with removable mold cores

Details Molding apparatus with removable mold cores Molding apparatus with removable mold cores

2006-03-07

2006-03-07

Heckenberg, Donald (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For press shaping surface

C425S19200R, C425S808000, C249S120000, C249S139000

Reexamination Certificate

active

07008212

ABSTRACT:
A molding apparatus for lenses includes first and second molding units, each of which has a mold core holder, a plurality of mold cores disposed in the mold core holder, and a clamp unit provided within the mold core holder. The mold core holder has an abutment surface, and a plurality of cavities extending inwardly from the abutment surface and receiving respectively the mold cores. The cavities include cavity walls, respectively. The clamp unit includes a plurality of clamp elements attached to the clamp unit to clamp respectively the mold cores against the cavity walls. Individual removal of the mold cores of the molding units for replacement is permitted by operating the clamp elements.

REFERENCES:
patent: 2424235 (1947-07-01), Hoffre
patent: 2448827 (1948-09-01), Reder, Jr.
patent: 3981477 (1976-09-01), Armbrust et al.
patent: 4150931 (1979-04-01), Gabrys
patent: 4911632 (1990-03-01), Mansfield
patent: 6328921 (2001-12-01), Marshall et al.

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