Packerhead with elastic rollers
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United States of America Patent
Stats
-
Sep 1, 1987
Grant Date -
N/A
app pub date -
Mar 6, 1986
filing date -
Mar 6, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A packerhead concrete pipe making machine having a rotatable packerhead operable to form a concrete pipe in an upright cylindrical mold about a wire cage. The packerhead has a plurality of rollers rotatably mounted on a circular plate operable to pack concrete into a cylindrical shape in the mold. Each roller has an outer sleeve of elastic rubber material. A cylindrical wall secured to the plate supports an annular troweling member operable to finish the inside surface of the concrete pipe.
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Cited Art Landscape
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