Metal deforming – By application of fluent medium – or energy field – Using fixed die
Reexamination Certificate
2006-12-19
2006-12-19
Jones, David B. (Department: 3725)
Metal deforming
By application of fluent medium, or energy field
Using fixed die
C072S455000, C072S446000, C072S060000, C100S278000
Reexamination Certificate
active
07150171
ABSTRACT:
The present invention relates to a press of pressure cell type, a tray for use in a press of pressure cell type and a method. The tray comprises a tray frame, which defines a space for arranging a forming tool and/or a work-piece. Prestressing means are arranged on the external surface of the tray frame and induce a compressing prestress which acts in planes parallel to the plane of the tray. The tray frame presents a curvature along its entire circumference.
REFERENCES:
patent: 2771850 (1956-11-01), Wheelon
patent: 4573335 (1986-03-01), Persson
patent: 4658618 (1987-04-01), Hellgren
patent: 4676086 (1987-06-01), Hellgren
patent: 4693103 (1987-09-01), Hellgren
patent: 4711111 (1987-12-01), Hellgren
patent: 452 436 (1987-11-01), None
patent: WO 02/43890 (2002-06-01), None
Avure Technologies AB
Harness & Dickey & Pierce P.L.C.
Jones David B.
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