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Class Information
Number: 251/283
Name: Valves and valve actuation > Balanced valves > Rotary
Description: Valves in which the valve unit rotates.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8511262 Valve device with a drawer and circuit comprising such a valve Aug. 20, 2013
7921876 Rotary control valve and associated actuator control system Apr. 12, 2011
7882797 Method and device for application of particles in an absorbent structure Feb. 8, 2011
7610935 Fluid controller Nov. 3, 2009
7578313 Rotary pilot valve Aug. 25, 2009
7322375 High bandwidth rotary servo valves Jan. 29, 2008
7231940 Control valve for a hydraulic power steering system Jun. 19, 2007
7152627 Control valve for a hydraulic power steering system Dec. 26, 2006
7140342 Slotted cylindrical tube rotary valve assembly Nov. 28, 2006
6808162 Rotary 2-way servovalve Oct. 26, 2004
6708691 Valve and oscillator for producing a pressure waveform Mar. 23, 2004
6694749 Rotary valve Feb. 24, 2004
6484999 Plug valve internal pressure balancing Nov. 26, 2002
6470913 Balanced rotary servovalve Oct. 29, 2002
6427722 Rotary slide set for a hydraulic steering arrangement Aug. 6, 2002
6173940 Valve ball configuration Jan. 16, 2001
6145540 Rotary solenoid valves for vehicular applications Nov. 14, 2000
6113359 Axial piston pump and relieved valve plate therefor Sep. 5, 2000
6053204 Regulation disc valve with discharging device Apr. 25, 2000
5979501 Fluid distributing apparatus for piston-type hydraulic motors or pumps Nov. 9, 1999
5901737 Rotary valve having a fluid bearing May. 11, 1999
5868165 Rotary metering-pin servovalve and method of manufacturing the same Feb. 9, 1999
5779222 Tapered plug valve Jul. 14, 1998
5664761 Disk valve Sep. 9, 1997
5623966 Flow control choke with shutoff seal Apr. 29, 1997
5597014 High-flow direct-drive rotary servovalve Jan. 28, 1997
5531247 Temperature and pressure resistant shutoff valve Jul. 2, 1996
5392813 Integral bleed system for valve Feb. 28, 1995
5385332 Flow stabilized, retractable seal, double-block and bleed plug valve Jan. 31, 1995
5327935 Three-way valve with pressure balanced plug member Jul. 12, 1994
5307838 Rotary valve assembly May. 3, 1994
5301922 Change-over valve means for a hydraulic clutch of the marine propulsion unit Apr. 12, 1994
5207241 Liquid shut-off valve May. 4, 1993
5205320 Flow rate control unit Apr. 27, 1993
5178363 Valve stem sealing means for prevention of fugitive emissions Jan. 12, 1993
5129624 Valve stem sealing means for prevention of fugitive emissions Jul. 14, 1992
5113910 Butterfly valve with biased area reduction means May. 19, 1992
5102097 Butterfly valve with plural-fence modulator plate Apr. 7, 1992
5067506 Flight craft with fluid systems which incorporate butterfly valves, and butterfly valve methods and apparatus Nov. 26, 1991
5052657 Ball valve Oct. 1, 1991
5029599 Butterfly valve method and apparatus Jul. 9, 1991
5014748 Rotary valve May. 14, 1991
5005804 Balanced-torque butterfly valve Apr. 9, 1991
5000213 Butterfly valve method and apparatus Mar. 19, 1991
5000212 Butterfly valve method and apparatus employing variably positionable pivot shaft Mar. 19, 1991
4995414 Butterfly valve method and apparatus Feb. 26, 1991
4992034 Low-speed, high-torque gerotor motor and improved valving therefor Feb. 12, 1991
4969485 Butterfly valve apparatus and method Nov. 13, 1990
4967778 Butterfly valve apparatus and method Nov. 6, 1990
4964431 Butterfly valve apparatus and method Oct. 23, 1990

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