Fluid handling – Systems – Multi-way valve unit
Patent
1974-08-22
1976-05-25
Cohan, Alan
Fluid handling
Systems
Multi-way valve unit
13762568, 251282, F15B 1304
Patent
active
039590240
ABSTRACT:
A slide valve in which the valve member has an apertured interior partition extending in the direction of sliding movement of the valve member in a position intermediate a ported wall with which the valve member is engageable and a further wall of the housing containing a cavity, the surface areas of the partition on each side thereof being substantially equal, whereby fluid pressure inside the valve member is transmitted to the cavity through the apertured internal partition and acts on each side of the latter, thereby to hold the valve member in substantial fluid balance in a direction perpendicular to the ported wall and hence to reduce the force required to slide the valve member into and out of its operative positions.
REFERENCES:
patent: 259662 (1882-06-01), Brewer
patent: 277328 (1883-05-01), Murphy
patent: 358799 (1887-03-01), Armstrong
patent: 488488 (1892-12-01), Toucey
patent: 696718 (1902-04-01), Charles
patent: 730428 (1903-06-01), Wilson
patent: 3004555 (1961-10-01), Haberland
patent: 3353557 (1967-11-01), Faisandier
patent: 3370611 (1968-02-01), Flint
patent: 3530893 (1970-09-01), Masuda
patent: 3595274 (1971-07-01), Faisandier
Kirk Colin John
Searle Malcolm John
Cohan Alan
Martonair Limited
Michalsky Gerald A.
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