Plastic lens block with ribs

Details Plastic lens block with ribs Plastic lens block with ribs

1991-11-12

1993-01-12

Kisliuk, Bruce M.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51284R, B24B 4106, B24B 13005

Patent

active

051779072

ABSTRACT:
A lens block for use in securing an optical lens during cutting, grinding and polishing of the lens is disclosed wherein the lens block is formed from a plastic material and includes various radially extending grooves for introducing an adhesive material between the lens block and a lens blank to be worked upon. The grooves also defined therebetween various ribs and upstanding surface portions which function to increase the surface area of the lens block for adhesion purposes and to provide additional structural rigidity to the lens block which prevents flexing of the block.

REFERENCES:
patent: Re31897 (1985-05-01), Johnson
patent: 3353307 (1967-11-01), Sarofeen
patent: 3704558 (1972-12-01), Sarofeen
patent: 3996701 (1976-12-01), Ramirez et al.
patent: 4089102 (1978-05-01), Soper et al.
patent: 4358913 (1982-11-01), Sorrells
patent: 4459784 (1984-07-01), Hernandez et al.
patent: 4714232 (1987-12-01), Blot
patent: 4925518 (1990-05-01), Wasserman et al.

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