Plastic article or earthenware shaping or treating: apparatus – Means for molding powdered metal
Reexamination Certificate
2008-01-15
2008-01-15
Gupta, Yogendra N (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
Means for molding powdered metal
C425S135000, C425S150000, C425S412000
Reexamination Certificate
active
07318715
ABSTRACT:
A press for producing shaped parts of powder material has lifting rods and a transverse part mounted on the lifting rods. A top punch holder is connected to the transverse part. A top punch is mounted in the top punch holder. An eccentric drive acting on the top punch through the lifting rods and the transverse part is provided. The transverse part has an actuating drive acting on the top punch, wherein the actuating drive at least partially compensates an elastic expansion of the press occurring during a pressing stroke.
REFERENCES:
patent: 4260346 (1981-04-01), Anderson et al.
patent: 4946634 (1990-08-01), Shaner
patent: 5692405 (1997-12-01), Kirii
patent: 6156265 (2000-12-01), Sugimoto
patent: 2004/0195715 (2004-10-01), Grobl et al.
patent: 19846210 (2000-04-01), None
patent: 1074380 (2001-02-01), None
patent: 2053074 (1981-02-01), None
Gupta Yogendra N
KOMAGE-Gellner Maschinenfabrik KG
Kueffner Friedrich
Nguyen Thu Khanh T.
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