Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1989-12-29
1992-07-14
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
4251291, 425438, 425442, 425444, 425556, 425DIG58, 249 93, 249172, 249177, B29C 4514, B29C 3344
Patent
active
051298040
ABSTRACT:
A mold for making bathtubes is disclosed. The mold includes a mold receptor and an insert attached to the mold receptor face. The mold receptor receives a shell which has a finish side and a non-finish side. The shell is placed in the mold receptor leaving a void between the non-finish side of the shell and the face of the receptor. The insert is attached to the face of the mold receptor to reduce the cross-sectional area of a portion of the space between the shell and mold receptor face. A male mold engages the finish side of the shell, sealably retaining the shell to the mold receptor. A polymeric foam material is introduced into the void between the receptor and the shell. The polymeric material fills the void and coats the shell. The molded bathtub is then removed from the mold receptor after the male mold has been removed. The insert is then removed leaving an area of reduced thickness and a periphery on the non-finish side of the molded bathtub which defines a lip.
REFERENCES:
patent: 2400024 (1946-05-01), Roehrl
patent: 2514886 (1950-07-01), McDearmon
patent: 2591607 (1952-04-01), Rich
patent: 2820228 (1958-01-01), Rodman
patent: 2871619 (1959-02-01), Walters
patent: 3148433 (1964-09-01), Carriker
patent: 3339879 (1967-09-01), Gruber
patent: 3368239 (1968-02-01), Wiltshire
patent: 3427178 (1969-02-01), Zakim et al.
patent: 3610563 (1971-10-01), Allen
patent: 3674394 (1972-07-01), Wiltshire
patent: 3680826 (1972-08-01), Bassani
patent: 3925530 (1975-12-01), Rees
patent: 4053545 (1977-10-01), Fay
patent: 4664982 (1987-05-01), Genovese et al.
patent: 4844944 (1989-07-01), Graefe et al.
patent: 4844955 (1989-07-01), Graefe et al.
C2 3712959 Schock & Co.; Germany Patent Aug. 1989.
Marsilio Ronald M.
Perantoni John C.
American Standard Inc.
Knab Ann M.
Nguyen Khanh P.
Sinnott John P.
Woo Jay H.
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