Dummy lens for molded-to-shape eyeglass frame fronts and molds t

Details Dummy lens for molded-to-shape eyeglass frame fronts and molds t Dummy lens for molded-to-shape eyeglass frame fronts and molds t

1980-12-23

1983-05-17

Flint, Jr., J. Howard

Static molds

Container-type molding device

And an inner removable core to form recess or opening

425808, 425DIG58, B29C 100, B29D 1100, B29F 100

Patent

active

043836739

ABSTRACT:
A dummy lens for molded-to-shape eyeglass frame front molds including mold halves defining rim forming channels and a central bridge forming channel. The dummy lens comprises a lenticular disc having a periphery ridge adapted to define the groove for the ultimate ophthalmic lens and an axial projection extending from the concave side of the disc and having a cylindrical portion for centering the dummy lens and a tapered portion at its free end defining a draft. The disc and the tapered free end of the dummy lens bear against respective opposed plateaus of the half molds.

REFERENCES:
patent: 3104425 (1963-09-01), Crane et al.
patent: 3228070 (1966-01-01), Gill
patent: 3266100 (1966-08-01), Belanger
patent: 3387334 (1968-06-01), Belanger et al.
patent: 3406232 (1968-10-01), Barker
patent: 3531869 (1970-10-01), Hays et al.
patent: 3915608 (1975-10-01), Hayik
patent: 4161060 (1979-07-01), Lenne et al.

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