Method and device for producing a straight cylindrical body by molding using a loose hardenable granular material and the utilization thereof for producing a tube
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United States of America Patent
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Jun 28, 2005
Grant Date -
Apr 22, 2004
app pub date -
Jan 11, 2001
filing date -
Jan 12, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to molding a right cylindrical body from a settable loose granular composition in a mold cavity, in which a mold cavity (4) is fed with successive charges of the composition in the loose state and each new charge is thrust by means of thrust surfaces (11) into the surface S of the molded composition in order to cause the new charge and the molded composition to interpenetrate in such a manner as to densify the molded composition. The invention is applicable to making a pipe, in particular out of a cement composition.
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