Process for finishing the edge of corrective lenses made of plas

Details Process for finishing the edge of corrective lenses made of plas Process for finishing the edge of corrective lenses made of plas

1991-05-16

1995-05-02

Rose, Robert A.

Foundation garments

Breast or chest, e.g., brassieres

With stiffening strips, strands, or stays, e.g., wired

451 58, 451450, B24B 914

Patent

active

054108438

ABSTRACT:
An improved process for finishing the edge of corrective lenses made of thermoplastic material or of a mixture of thermoplastic and thermosetting plastic materials. This process includes the steps of dry pre-profiling and dry post-profiling the corrective lens and the further subsequent additional process step of wet final finishing and/or calibrating the corrective lens by using an additional fine grinding wheel and applying cooling liquid to the contact area between said corrective lens and said fine grinding wheel.

REFERENCES:
patent: 2674068 (1954-04-01), Eves et al.
patent: 3520091 (1970-07-01), Raphael
patent: 4322915 (1982-04-01), Kindig
patent: 4908996 (1990-03-01), Friedman et al.

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