Plastic article or earthenware shaping or treating: apparatus – Means for molding powdered metal
Patent
1979-10-09
1981-04-07
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Means for molding powdered metal
425352, B30B 1522, B30B 1102
Patent
active
042603463
ABSTRACT:
The present invention is directed to an improved powder press assembly of the withdrawal die type that is capable of subjecting the frame and die set to only compressive forces while accurately maintaining the dimensions of a compacted part. Mechanical stops are provided in upper and lower ram assemblies and cooperate with a multifunction push rod assembly to provide bilateral press position. The high and low pressure hydraulic system provides an economical use of the power requirements and further includes a bypass valve in a main pressure cylinder to accommodate rapid movement of the upper ram assembly.
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Anderson, Jr. Raymond B.
Jensen Aksel S.
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