Apparatus for the compression of granular material

Details Apparatus for the compression of granular material Apparatus for the compression of granular material

1984-11-28

1986-02-18

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Means to create a vacuum or apply fluid pressure within a...

B29C 500

Patent

active

045711682

ABSTRACT:
An apparatus for the introduction of a gaseous medium into a chamber, especially for compressing casting molding material with a high-pressure gaseous medium supplied by a pressure vessel linked with the chamber by means of a valve system. The system has a seat having traversing openings which can be covered or uncovered by a stroke-activatable valve plate. The gaseous medium flows freely round the surface of the valve plate. The valve plate also is provided with traversing openings which, however, are displaceably arranged vis-a-vis the traversing openings of the valve seat. To trigger a pressure shock from the gaseous medium necessary to effect compression, an elevating mechanism for the valve is activated to lift the valve plate. The pressurized gaseous medium then flows round, as also throughout the valve plate and acts on the surface of the chamber.

REFERENCES:
patent: 3663148 (1972-05-01), Walker et al.
patent: 3892506 (1975-07-01), Dann et al.
patent: 4286937 (1981-09-01), Abrens

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