Plastic and nonmetallic article shaping or treating: processes – Treatment of material by vibrating – jarring – or agitating... – By reciprocating or vibrating mold
Patent
1980-10-06
1982-08-03
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Treatment of material by vibrating, jarring, or agitating...
By reciprocating or vibrating mold
264333, 425426, 425428, 425432, 425435, B28B 108, B28B 718, B28B 2112, B28B 2114
Patent
active
043427138
ABSTRACT:
A process and a device for producing concrete pipe by filling and compacting fresh concrete in an upright casting form. An outer jacket surrounding a vibrator-equipped core is rotated around its geometric axis with an internal peripheral speed which is greater than the maximum vibrational speed at which said core acts on the fresh concrete during compaction, said vibrational speed being the product of the amplitude and frequency at which the core vibrates. Around its circumference, the outer jacket has axially distributed roller paths for cooperation with rotationally journalled rollers which can be pressed against them. At least one roller is driven and is a drive means for rotating the jacket, the others being non-driven support rollers. All rollers are mounted on a frame member around the outer jacket of the casting form.
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patent: 3752626 (1973-08-01), Trautner et al.
AB Skanska Cementgjunteriet
Anderson Philip
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