Counter rotating packerhead assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 4, 1983
Issued Date -
N/A
app pub date -
Apr 9, 1982
filing date -
Sep 18, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A concrete product making machine having a counter rotating packerhead assembly and a concrete supply control operable to maintain a desired amount of concrete in the mold above the packerhead assembly. The counter rotating packerhead assembly has a first packerhead unit rotated in one direction by a motor and a second packerhead unit rotated in an opposite direction by hydraulic motors mounted on the cross head of the machine. The second packerhead unit located above the first packerhead unit has a plurality of rollers and an annular trowel. The trowel has radially adjustable shoes which meter the flow of concrete to the first packerhead unit. A control system responsive to hydraulic fluid pressure supplied to the hydraulic motors controls the operation of a concrete supply conveyor operable to deliver concrete to the chamber above the packerhead assembly. The control system includes a control valve assembly operable to regulate the supply of hydraulic fluid to a hydraulic motor operating the conveyor.
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