Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Patent
1988-12-14
1990-05-08
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
249124, 249142, 249178, 249180, 425577, 425817R, B28B 730
Patent
active
049233785
ABSTRACT:
Disclosed herein is a mold assembly for molding a plastic article having a recess formed therein. The mold assembly includes a lower mold having a cavity formed therein; an upper mold adapted to be put on the lower mold to close the cavity; a core adapted to be put in the cavity; positioning means including a first member connected to a given portion of the cavity of the lower mold and a second member connected to the core, the first and second members being coupled when mated; and guide means for guiding the core in a manner to facilitate the mating of the second member with the first member.
REFERENCES:
patent: 3819099 (1974-06-01), Bierenfeld
patent: 4157806 (1979-07-01), Bourdon et al.
patent: 4455274 (1984-06-01), Horney
patent: 4470784 (1984-09-01), Piotrovsky
patent: 4532093 (1985-06-01), O'Malley et al.
patent: 4587074 (1986-05-01), De Loof
patent: 4737096 (1988-04-01), Poorten
patent: 4738809 (1988-04-01), Storch
Ishimaru Kiichiro
Matsuura Ichiro
Mizuno Hisayoshi
Omata Youichi
Ikeda Bussan Co. Ltd.
Nguyen K. P.
Woo Jay H.
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