Reinforced metal clay extruder

Details Reinforced metal clay extruder Reinforced metal clay extruder

2006-07-07

2008-08-26

Gupta, Yogendra (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

C425S461000, C222S390000, C222S391000

Reexamination Certificate

active

07416400

ABSTRACT:
The present invention provides a clay extruder having a reinforced plunger for shaping clay into desired patterns. The extruder has a screw disposed within a sleeve, a reinforced plunger located on the screw and inside the sleeve, a handle located on the screw and outside of the sleeve, and a perforated disk opposite the insertion of the screw into the sleeve. The handle is used to turn the screw and move the plunger through the sleeve. As the plunger pushes clay out the sleeve, an o-ring around the plunger prevents clay from leaking back, and a perforated disk molds the clay into a desired pattern. Metal construction and a thicker side of the plunger allow the extruder to be subjected to high amounts of torque and pressure without damage or failure.

REFERENCES:
patent: 1318928 (1919-10-01), Shields
patent: 2420616 (1947-05-01), Palmer
patent: 2955530 (1960-10-01), Nilo
patent: 3984033 (1976-10-01), Groth et al.
patent: 4456450 (1984-06-01), Heling
patent: 5183671 (1993-02-01), Perez
patent: 6439274 (2002-08-01), DeBoisblanc

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