Pair of cooperating disks to control the delivery of liquid in so-called "sc" valves
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United States of America Patent
Stats
-
Aug 7, 1990
Grant Date -
N/A
app pub date -
Nov 30, 1989
filing date -
Dec 2, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The object of the invention is a pair of superimposed ceramic disks (11,12) to open and close screw type valves, one of said disks (11) being fixed and the other one (12) being movable on the fixed disk, where each of said disks presents a slot or opening (15,16) composed by a segment portion (15',16') and by a tapered curved portion (15,',16') extending from one end of said segment portion, the slot or opening (15) of one disk (11) being turned in a direction which is opposite to the direction of slot (16) in the other disk (12), so that when opening the valve the tapered curved portions (15',16') are the first to superimpose to gradually increase the flow of the delivered liquid.
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Cited Art Landscape
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