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

1976-02-17

Larson, Lowell A.

Metal deforming

By application of fluent medium, or energy field

Using fixed die

92102, B21D 2212

Patent

active

039383610

ABSTRACT:
In a hydraulic press which includes a pressure cell with a diaphragm of flexible material which is intended to press a pad of flexible material against forming pieces in a working space below the pad, the diaphragm has an opening with an annular bead therearound. Two disc-like attachment members are provided, which form between them an annular groove which fits the bead of the diaphragm. Between the bead and one of the attachment members there is formed an annular groove within which is a sealing ring which engages between the bead and at least one of the annular 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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