Pressure limiting valve
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United States of America Patent
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-
Jul 14, 2009
Grant Date -
Nov 29, 2007
app pub date -
May 9, 2007
filing date -
Nov 9, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure limiting valve having a spool with raised spool lands. The spool is slidably received in a spool bore having inflow and outflow grooves that form control edges. The valve has two control edges, and a hydraulic resistance is connected in series with one of the control edges. Increasing static pressure losses at the control edges during flow, so-called flow forces, can be offset by an increasing back pressure on the valve spool, which is produced by the hydraulic resistance.
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