Contact lens tool

Details Contact lens tool Contact lens tool

1978-02-10

1979-08-14

Whitehead, Harold D.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51229, 51235, 269 21, 279 3, B24B 4106, B24B 4700

Patent

active

041640993

ABSTRACT:
A contact lens holder or tool for grinding or polishing, including a handle, a tubular receptacle open at its outer end and having a shaft protruding from its inner end which is rotatably mounted in the handle, a deformable fluid chamber closely fitted into the receptacle and having an open outer end protruding therefrom, a plug having an axial passage leading from an arcuate, external, lens-holding surface to the interior of the fluid chamber, an opening in the tubular receptacle wall, and an insertable and removable mechanical evacuator having a portion inserted into said opening to deform the fluid chamber, so as to partially evacuate the chamber and hold a lens against the arcuate surface of the plug, and removed from the opening to permit non-eccentric spinning of the receptacle, fluid chamber, plug and lens with respect to the handle, while the lens is being ground or polished.

REFERENCES:
patent: 3125836 (1964-03-01), Printz
patent: 3134208 (1964-05-01), Richmond
patent: 3274737 (1966-09-01), Rocher
patent: 3647380 (1972-03-01), Middleton

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