Press diaphragm

Details Press diaphragm Press diaphragm

1980-08-04

1982-05-18

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

By fluid pressure actuated flexible diaphragm

264314, 425405R, 425DIG19, B28B 706, B30B 1102

Patent

active

043302505

ABSTRACT:
A press diaphragm for pressing china plates etc. has an edge part designed to be forced inwards on pressing and then to be moved back outwards on letting off the pressure clear of the plate edge. To this end the diaphragm has an edge part, acted upon by a downwardly moving keeper, and has a groove in its upper face. Under the groove the diaphragm is acted upon by hydraulic pressure more than at other positions.

REFERENCES:
patent: 3520961 (1970-07-01), Suda et al.
patent: 4128375 (1978-12-01), Schubart

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