Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold
Patent
1986-09-29
1988-03-08
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
By reciprocating or vibrating mold
264267, 264274, 264275, 264311, 425125, 425432, 4254519, B28B 108, B28B 120
Patent
active
047298596
ABSTRACT:
A method for centrifugally casting a rectangular access floor panel includes the steps of forming a metal pan having a planar bottom, peripheral sidewalls and a plurality of upstanding tabs, inserting the metal pan into a cavity defined by a two-part mold and filling the pan within the mold with a concrete mixture. The mold is rotated about a vertical axis and vibrated to evenly distribute the concrete mixture within the pan. A smooth magnetic sheet is placed within the cavity. The sheet engages the planar bottom of the metal pan and prevents seepage of the concrete mixture through openings in the bottom of the pan during casting. The apparatus includes a turntable, a drive for rotating the turntable and a mold clamped to the turntable. The mold is vibrated during rotation to insure a void-free distribution of the mixture throughout the pan.
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DeJong Leroy D.
Keip Charles P.
Munsey R. Jack
C-Tec, Inc.
Kutach Karen D.
Silbaugh Jan H.
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