Metal clay extruder

Details Metal clay extruder Metal clay extruder

2005-06-03

2008-08-19

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

07413429

ABSTRACT:
The present invention provides a clay extruder usable for shaping clay into desired patterns. The extruder has a screw disposed within a sleeve, a 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 allows 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: 3262404 (1966-07-01), Morz et al.
patent: 3984033 (1976-10-01), Groth et al.
patent: 4127375 (1978-11-01), Nelson
patent: 4456450 (1984-06-01), Heling
patent: 5183671 (1993-02-01), Perez
patent: 6439274 (2002-08-01), DeBoisblanc

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