Hydraulic double valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 20, 2004
Grant Date -
Jan 9, 2003
app pub date -
May 6, 2002
filing date -
May 4, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A control valve system in which main valves are actuated and deactuated by operation of pilot valves. Actuation of pilot valves causes actuation of the main valves, which enables fluid pressure to be output from the control valve system. The main valves must shift within a predetermined time period in order to prevent an error condition. A timing chamber stores a predetermined amount of fluid to define a time period in which the main valves must shift.
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Cited Art Landscape
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