Concrete pipe manufacturing machinery and methods

Details Concrete pipe manufacturing machinery and methods Concrete pipe manufacturing machinery and methods

2006-10-24

2006-10-24

Smith, Duane (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For press shaping surface

C425S262000, C425S426000, C425S460000

Reexamination Certificate

active

07125239

ABSTRACT:
A concrete pipe making machine having a packerhead consisting of a rollerhead and a longbottom in which the rollerhead and longbottom are quickly assembleable and disassembleable as a unit from the packerhead drive means with one connector and brought into final adjustment off the machine, said drive means providing no obstruction to the flow of wet concrete toward the compaction area, the speed ratios between the rollerhead and longbottom being infinitely variable, and easily replaceable protective wear rings for precluding erosive deformation of the permanent parts of the machine due to undesired penetration of wet concrete into the longbottom.

REFERENCES:
patent: 3096556 (1963-07-01), Woods
patent: 3276091 (1966-10-01), Pausch
patent: 4407648 (1983-10-01), Fosse
patent: 4690631 (1987-09-01), Haddy
patent: 4957424 (1990-09-01), Mitchell et al.
patent: 5080571 (1992-01-01), Crawford
patent: 5364578 (1994-11-01), Grau

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