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US 4,045,138 AGranted
Method for applying a liquid filler to lenses in glasses frames
AssigneePrado Verde, Inc.
InventorsDonald M. Kunde, Frank M. Lagrimanta
Life of this patent
Estimating the term…
Abstract
The invention concerns the application of a filler strip to an eye wire rim of a glasses frame to more securely hold a lens in place. The filler strip is provided as a viscous liquid which is applied to the eye wire rim as a bead extending along a selected reach in the rim. The viscous liquid will quickly harden to a resilient solid forming a seat in the eye wire rim to receive the edge of the lens.
Claims4
A method for installing a lens in a channel of an expansible eye wire rim of a glasses frame, said lens being ground to approximate the shape of said eye wire rim, comprising:
- a. applying to said channel of said eye wire rim a bead of cellulose acetate butyrate cut to a viscous liquid by methylene chloride capable of changing to a resilient, solid state after the expiration of a short time period;
- b. placing said lens in said eye wire rim while the rim is expanded to receive the same;
- and
- c. closing the eye wire rim upon the lens and resilient resin.
1 more element
Dependencies are inferred from the claim text.