Manufacture and method of producing a resilient diaphragm suitab

Details Manufacture and method of producing a resilient diaphragm suitab Manufacture and method of producing a resilient diaphragm suitab

1990-04-26

1991-09-03

Pollard, Steven M.

Receptacles

Container attachment or adjunct

Pressure relief means

138 30, F16L 5500

Patent

active

050445111

ABSTRACT:
A thin walled membrane type diaphragm particularly for liquid pressure accumulators and a method of production is disclosed comprising membrane made from rubber, synthetic rubber, P.V.C. or like suitable material including a neck portion forming the opening of the diaphragm and adapted to be mounted in the neck of a pressure tank and a closed tank region or body region which is formed from cruciform pleats which may be symmetrical such that the dimension of the body portion is reduced for a given volume of body region.
The moulding of the diaphragm in this form enables a diaphragm of greater internal capacity to be moulded in a given sized injection moulding such that the core size of the moulding machine can be readily removed through the base region of the diaphragm.

REFERENCES:
patent: 2805684 (1957-09-01), Love
patent: 3121993 (1964-02-01), Pennington
patent: 3143144 (1964-08-01), Peet
patent: 3424201 (1969-01-01), Sugimura et al.
patent: 3473565 (1969-10-01), Blendermann
patent: 4784182 (1988-11-01), Sugimura

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