Expansible chamber devices – Plural flexible wall working members
Patent
1980-01-07
1982-03-30
Hershkovitz, Abraham
Expansible chamber devices
Plural flexible wall working members
92 83, 92 865, 92 98R, F01B 1900
Patent
active
043218563
ABSTRACT:
In a pulser for transmitting the reciprocating motion of a piston to a fluid contained in a chamber such as a solvent extraction column, at least one pulsation diaphragm having the shape of a hollow torus is joined to the piston and to a rim of the duct in leak-tight manner, means being provided for applying a pressure which compensates for the static pressure of the fluid on the piston and the pulsation diaphragm. The difference between the pressure exerted on the internal wall of the diaphragm on the fluid side and the pressure exerted on the external diaphragm wall is minimized during operation but maintained at a positive value.
REFERENCES:
patent: 2208772 (1940-07-01), Morley
patent: 2811925 (1957-11-01), Crooksten
patent: 3204858 (1965-09-01), Dros
patent: 3314594 (1967-04-01), Rietdijk
Commissariat a l''Energie Atomique
Hershkovitz Abraham
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