Apparatus for molding optical plastic lenses of the standard and

Details Apparatus for molding optical plastic lenses of the standard and Apparatus for molding optical plastic lenses of the standard and

1979-07-23

1984-10-02

Lowe, James B.

Static molds

With static gage, level, plumb, or scale markings, etc., on...

249 82, 249 93, 249117, 249155, 425808, B29D 1100

Patent

active

044743556

ABSTRACT:
Apparatus is provided for fabricating ophthalmic lenses of the single vision and bifocal type comprising a holder having a base portion for support thereof. An outer circumferential side wall extends upwardly from the base portion and terminates in an upper surface which is disposed in substantially parallel relationship of the bottom surface of the holder base portion. The side walls comprise a plurality of equally spaced support posts. The support posts are provided with a lower step and an upper step with the upper step being disposed radially outwardly of said lower step. The lower steps define a parallel support surface upon which there is disposed a lower mold. The upper steps define a parallel support surface upon which is disposed an upper mold. The upper and lower support surfaces being disposed in substantially parallel relationship. The upper and lower molds are spaced from one another by means of vertically extending shoulders disposed intermediate the lower and upper steps of each of the support posts.

REFERENCES:
patent: 2304217 (1942-12-01), Tillyer
patent: 2728106 (1955-12-01), Herman et al.
patent: 2890486 (1959-06-01), Crandon
patent: 3248460 (1966-04-01), Naujokas
patent: 3555610 (1971-01-01), Reiterman
patent: 3938775 (1976-02-01), Sarofeen
patent: 3946982 (1976-03-01), Calkins et al.
patent: 4085919 (1978-04-01), Sullivan
patent: 4095772 (1978-06-01), Weber

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