Counter rotating packerhead assembly

Details Counter rotating packerhead assembly Counter rotating packerhead assembly

1982-04-09

1983-10-04

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Dynamic male shaping means including mechanical movement or...

425262, B28B 2126, B28B 128

Patent

active

044076487

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.

REFERENCES:
patent: 402029 (1889-04-01), McNeal et al.
patent: 921142 (1909-05-01), Myers et al.
patent: 1938230 (1933-12-01), Ukropina
patent: 2751657 (1956-06-01), Holston
patent: 3096556 (1963-07-01), Woods
patent: 3262175 (1966-07-01), Gourlie et al.
patent: 3276091 (1966-10-01), Pausch
patent: 3733163 (1973-05-01), Hermann
patent: 3746494 (1973-07-01), Gauger

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