Pair of cooperating disks to control the delivery of liquid in so-called screw type valves
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United States of America Patent
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-
Apr 28, 1992
Grant Date -
N/A
app pub date -
Nov 7, 1990
filing date -
Nov 8, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a pair of overlapping ceramic disks for the opening and closing of screw type valves, where there is a fixed disk (11) with lateral slots inside the valve body and another disk (12) which rests on top of the fixed one (11) and where the fixed disk (11;31) has at least one segment like slot (11a;31a) closed at the perimeter and the movable disk (12;32) has at least one lateral opening (12;32a) which is open both at the bottom towards the fixed disk and radially towards the lateral slots (13a) of the valve body, and closed at the top by a spoked surface so as to improve the water flow conditions.
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