Plastic article or earthenware shaping or treating: apparatus – Female mold and cooperating stock smoothing means or excess...
Patent
1982-04-30
1985-01-08
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and cooperating stock smoothing means or excess...
264 70, 264228, 425 88, 425111, 425117, 425432, B28B 702
Patent
active
044925522
ABSTRACT:
A combination long lower mold and pretension bench for the formation of prestressed concrete materials is constructed by serially connecting plurality of unit lower molds of concrete, attaching prestressing steel wire tension benches one each to the foremost and rearmost unit lower molds, and fastening the unit lower molds and the tension benches collectively with steel wires. Prestressed concrete materials are obtained by stretching prestressing steel wires along the upper surface of the long lower mold, continuously pouring and placing stiff-consistency concrete on the long lower mold, causing a slide upper mold to run on the concrete thereby shaping the concrete in a required cross section, curing the shaped concrete strip, and cutting the cured concrete strip into pieces of a desired size.
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Murakami Yoshihiko
Ohta Noboru
Fuji P.S. Concrete Co., Ltd.
Housel James C.
Woo Jay H.
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