Preform for attaching a holding member to an optical lens, and m

Details Preform for attaching a holding member to an optical lens, and m Preform for attaching a holding member to an optical lens, and m

1996-05-03

1997-09-23

Rose, Robert A.

Abrading

Accessory

Work-mounting device

45 42, B24B 2900

Patent

active

056698070

ABSTRACT:
A preform for attaching a holding member to an optical lens comprises a base constrained to rotate with the optical lens to be machined by a low melting point metal coupling layer cast in situ and a superstructure capped by a drive tool. The edge of the base is inwardly offset relative to the superstructure. This enables the coupling layer to form around it a bearing surface that can be gripped by the drive tool. The preform is used to attach holding members to optical lenses, in particular ophthalmic lenses.

REFERENCES:
patent: Re19015 (1933-12-01), Hill
patent: 3383808 (1968-05-01), Deshayes et al.
patent: 3499253 (1970-03-01), McCall
patent: 3512310 (1970-05-01), Rudd et al.
patent: 3996701 (1976-12-01), Ramirez et al.

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