Plastic article or earthenware shaping or treating: apparatus – Press forming apparatus having opposed press members – Male shaping member and female mold
Patent
1994-10-05
1996-07-16
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
Press forming apparatus having opposed press members
Male shaping member and female mold
249117, 249124, 249140, B29C 4336
Patent
active
055361609
ABSTRACT:
A solidifying liquid is placed into a mold having sides and a planar bottom. A plurality of separators are attached to the bottom of a support grid. The support grid is then placed onto the mold, with positioning projections extending through holes in the support grid. The liquid is then allowed to set, forming a work surface having a flat top surface and support ribs on its bottom surface.
REFERENCES:
patent: 952272 (1910-03-01), Nieholls
patent: 1494237 (1924-05-01), Haddad
patent: 3219307 (1965-11-01), Leeds et al.
patent: 4168140 (1979-09-01), Fontana et al.
patent: 5062610 (1991-11-01), Woolford et al.
patent: 5370353 (1994-12-01), Billson
Kelly H. Dennis
Nguyen Khanh P.
Surfaces International LLC
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