Alignable cooling plug for extruder

Details Alignable cooling plug for extruder Alignable cooling plug for extruder

2008-03-31

2011-12-13

Del Sole, Joseph (Department: 1743)

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

C425S369000, C425S378100

Reexamination Certificate

active

08075295

ABSTRACT:
A molding apparatus for the manufacture of pipe advantageously uses a cooling plug that is adjustably-secured to the extrusion head to compensate for misalignment of the extrusion head relative to recirculating mold blocks. This provides a simplified adjustment for adjusting the molding apparatus to correct for wall thickness variations in the molded pipe. This apparatus can be used in combination with existing alignment systems.

REFERENCES:
patent: 4770618 (1988-09-01), Lupke
patent: 4867928 (1989-09-01), Jarvenkyla et al.
patent: 4995800 (1991-02-01), Lupke
patent: 5120212 (1992-06-01), Reiber et al.
patent: 5123827 (1992-06-01), Lupke
patent: 6155813 (2000-12-01), Lupke et al.

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