Plastic article or earthenware shaping or treating: apparatus – Press forming apparatus having opposed press members – Male shaping member and female mold
Patent
1992-03-31
1992-11-03
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Press forming apparatus having opposed press members
Male shaping member and female mold
249160, 264 11, 264 23, 264 27, 4251744, 425808, B29D 1100
Patent
active
051607492
ABSTRACT:
A mold assembly for making an ocular device such as a contact lens, an intraocular lens or a lens blank has three pieces which include a sleeve, a first mold segment and a second mold segment. The first mold segment includes a peripheral skirt which extends away from a mold cavity and which terminates in an end portion which is in interference fit engagement with the sleeve for establishing a leak-resistant fluid seal.
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Machinery's Handbook, 15th ed. New York, The Industrial Press, 1956, pp. 1411-1412.
Christoff James D.
Griswold Gary L.
Kirn Walter N.
Mackey James P.
Minnesota Mining and Manufacturing Company
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