Fluid handling – Systems – Multi-way valve unit
Patent
1987-04-20
1988-08-16
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
13762531, 251208, F16K 302
Patent
active
047636920
ABSTRACT:
A valve body comprises a substantially solid body defining a surface of complementary form for engaging a valve seat, and having a pivot axis about which it is rotatably mounted relative to a valve orifice. A periphery of the valve body surface defines at least first and second curvilinear surfaces having axes of curvature which extend substantially parallel with each other and with the pivot axis of the valve body. The axis of curvature of a first of said curvilinear surfaces is disposed inwardly of the first surface and within the periphery of the valve body; and the axis of curvature of the second of the curvilinear surfaces is disposed on the opposite side of the second curvilinear surface and outside of the periphery of the valve body. A remaining portion of the valve body surface defines a cross-sectional area at least as great as the cross-sectional area of the valve orifice for fully covering the same when in a valve closed position. The first and second curvilinear surfaces following sequentially from the remaining surface, and being oriented such that during rotation of the valve body about its pivot axis, the first surface will initially come into registry with the valve orifice for initially relatively slowly opening the valve, and thereafter the second surface will come into registry with the valve orifice for thereafter relatively rapidly opening the valve.
REFERENCES:
patent: 4192349 (1980-03-01), Schroeder
Bachman Wesley J.
Gorsek Edmund J.
Dickey-john Corporation
Michalsky Gerald A.
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