Press containing a pressure cell with a flexible diaphragm and a

Details Press containing a pressure cell with a flexible diaphragm and a Press containing a pressure cell with a flexible diaphragm and a

1974-12-05

1976-04-13

Larson, Lowell A.

Metal deforming

By application of fluent medium, or energy field

Using fixed die

92102, B21D 2212

Patent

active

039495833

ABSTRACT:
A hydraulic press includes a pressure cell which includes a diaphragm of flexible material with an opening therein surrounded by an annular bead. There are two disc-shaped attachment members for the diaphragm which form between them a first annular groove which fits the bead. The bead and one of the annular members have opposed annular recesses therein, which face a surface of the other annular member. These thus form an annular channel, in which are arranged two sealing rings, one fitting between the bead and one of the attachment members and the other fitting between the two attachment members.

REFERENCES:
patent: 2669209 (1954-02-01), Hoffman
patent: 2771850 (1956-11-01), Wheelon
patent: 2786423 (1956-11-01), Coffey
patent: 3093086 (1963-06-01), Alotz et al.
patent: 3336843 (1967-08-01), Griswold
patent: 3645139 (1972-02-01), Zauoda

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