Static molds – Container-type molding device – Plural article forming mold – or molds with community feature
Patent
1996-09-30
1998-11-17
Niebling, John
Static molds
Container-type molding device
Plural article forming mold, or molds with community feature
249135, 205 50, 205 70, 264 11, 264 25, C25D 110
Patent
active
058371567
ABSTRACT:
The two sides of a multiple cavity mold having electroformed mold cavities for molding intraocular lenses with integral haptics are made by a preferred electroforming procedure involving the use of either a single primary master having a single cavity corresponding to the portion of the lens at either side of its median plane transverse to its optic axis if the lens to be molded is symetrical about both this transverse median plane and its longitudinal median plane containing the optic axis, or a pair of primary masters having single cavities, respectively, corresponding to the portions of each lens at opposite sides of its transverse median plane if the lens is unsymmetrical about either plane. The preferred electroforming procedure involves electroforming a secondary single male master on the single primary master or a single secondary male master on each primary master of the primary master pair, depending upon the symmetry of the lens to be molded, electroforming a plurality of individual tertiary female masters on the secondary male master or masters to form one or two groups of tertiary masters, as the case may be, mutually joining each group of tertiary female masters to form a multiple cavity master assembly, and utilizing individual tertiary female mold members and the master assembly or master assemblies to form a pair of final multiple cavity mold sides at least one of which is a unitary electroformed multiple cavity mold member and the other of which may comprise a plurality of the individual female mold members.
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Brown Boniard I.
Mee Brendan
Niebling John
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