Method for making a mold for a lens of single lens glasses havin

Details Method for making a mold for a lens of single lens glasses havin Method for making a mold for a lens of single lens glasses havin

1994-04-12

1996-02-06

Vargot, Mathieu D.

Metal working

Method of mechanical manufacture

With testing or indicating

29557, 264 21, 264 25, 425808, B29D 1100

Patent

active

054887631

ABSTRACT:
A method for making a mold for forming a lens for single lens glasses having two focal axes is provided. The mold consists of a male mold and a female mold. The male mold is made from portions of two conventional male molds to provide a left half portion and a right half portion of a new male mold, each portion having a separate focal axis. Subsequently the left and the right half portions are jointed together to be used with a conventional female mold to produce a lens for single lens glasses having two focal axes.

REFERENCES:
patent: 3109696 (1963-11-01), Whitney
patent: 3460928 (1969-08-01), Casko
patent: 3555126 (1971-01-01), Gitson
patent: 4338672 (1983-05-01), Kreuttner
patent: 4906422 (1990-03-01), Buckley
patent: 5147585 (1992-09-01), Blum
patent: 5252056 (1993-10-01), Horner et al.

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