Valves and valve actuation – With material guide or restrictor – Movable or resilient guide or restrictor
Patent
1985-05-07
1986-08-26
Scott, Samuel
Valves and valve actuation
With material guide or restrictor
Movable or resilient guide or restrictor
251127, 251 636, 166 91, F16K 4704, F16K 4708
Patent
active
046078193
ABSTRACT:
A high pressure multi-stage valve having a pair of opposing plates, one of which has a central flow port, the plates having annular interdigitated teeth and grooves and providing for sinuous path for flow of fluid from the port to the peripheries of said plates to provide for multi-stage expansion in a single pass between the interdigitated teeth. The magnitude of interdigitation can be adjusted. The teeth are of annular form and are of truncated triangular shape in cross section and the grooves are of complementary shape. In one form of the invention, at least a substantial number of the teeth are of the same cross sectional dimensions, and the angles of the side of each tooth to the vertical are the same to provide for equal depth flow legs between the opposing sides of adjacent teeth. In another form of the invention the angularity of the sides of the teeth change in a regular pattern from the axis outward. The valve may be actuated hydraulically, and the actuator may include a manually operated piston type pump. In one form of the invention the port is defined by a conical wall and a plug projects into the space defined by the wall, the plug having a stepped exterior complementary, angle-wise, to that of the conical wall to define plural areas of restriction alternating with areas of expansion.
REFERENCES:
patent: 856981 (1907-06-01), McCarroll
patent: 1558330 (1925-10-01), Bain
patent: 1743620 (1930-01-01), Quiroz et al.
patent: 1919232 (1933-07-01), Lee
patent: 3704718 (1972-12-01), Rudel
patent: 3820756 (1974-06-01), Meyer
patent: 3880399 (1975-04-01), Luthe
Flanigan Allen J.
Scott Samuel
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