| Patent | Date |
|---|
Fluid working machine with cylinders coupled to split exterior ports by electrohydraulic valves
Grant 8,869,521 - Stephenson , et al. October 28, 2 | 2014-10-28 |
Compact Radial Piston Hydraulic Machine Having a Cylinder Block with Deforming Regions
App 20140202325 - Kramer; Bradley J. ; et al. | 2014-07-24 |
Compact Eccentric Radial Piston Hydraulic Machine
App 20120111185 - Stephenson; Dwight B. ; et al. | 2012-05-10 |
Fluid Working Machine with Cylinders Coupled to Split Exterior Ports by Electrohydraulic Valves
App 20120011997 - Stephenson; Dwight B. ; et al. | 2012-01-19 |
Energy recovery and reuse techniques for a hydraulic system
Grant 7,905,088 - Stephenson , et al. March 15, 2 | 2011-03-15 |
Energy recovery and reuse methods for a hydraulic system
Grant 7,823,379 - Hamkins , et al. November 2, 2 | 2010-11-02 |
Hybrid hydraulic joystick with an integral pressure sensor and an outlet port
Grant 7,753,078 - Bertolasi , et al. July 13, 2 | 2010-07-13 |
Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve
Grant 7,487,707 - Pfaff , et al. February 10, 2 | 2009-02-10 |
Hybrid Hydraulic Joystick With An Integral Pressure Sensor And An Outlet Port
App 20080256941 - Bertolasi; Brian R. ; et al. | 2008-10-23 |
Hydraulic system with a cylinder isolation valve
Grant 7,409,825 - Stephenson August 12, 2 | 2008-08-12 |
Energy Recovery And Reuse Methods For A Hydraulic System
App 20080110165 - Hamkins; Eric P. ; et al. | 2008-05-15 |
Energy Recovery And Reuse Techniques For A Hydraulic System
App 20080110166 - Stephenson; Dwight B. ; et al. | 2008-05-15 |
Hydraulic Valve Assembly With A Pressure Compensated Directional Spool Valve And A Regeneration Shunt Valve
App 20080072749 - Pfaff; Joseph L. ; et al. | 2008-03-27 |
Pilot operated valve with a pressure balanced poppet
Grant 7,341,236 - Stephenson , et al. March 11, 2 | 2008-03-11 |
Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing Valves
App 20080034957 - Stephenson; Dwight B. ; et al. | 2008-02-14 |
Hydraulic System With A Cylinder Isolation Valve
App 20080028924 - Stephenson; Dwight B. | 2008-02-07 |
Integrated valve assembly and computer controller for a distributed hydraulic control system
Grant 7,270,046 - Stephenson , et al. September 18, 2 | 2007-09-18 |
Pilot operated valve with a pressure balanced poppet
App 20070210270 - Stephenson; Dwight B. ; et al. | 2007-09-13 |
Pilot operated control valve having a two stage poppet
App 20070157980 - Stephenson; Dwight B. ; et al. | 2007-07-12 |
Integrated valve assembly and computer controller for a distributed hydraulic control system
App 20070130935 - Stephenson; Dwight B. ; et al. | 2007-06-14 |
Hydraulic valve manifold block
Grant D542,307 - Stephenson , et al. May 8, 2 | 2007-05-08 |
Electronic controller and hydraulic valve block assembly
Grant D540,347 - Stephenson , et al. April 10, 2 | 2007-04-10 |
Hydraulic control circuit for operating a split actuator mechanical mechanism
Grant 6,715,402 - Pfaff , et al. April 6, 2 | 2004-04-06 |
Apparatus For Controlling Bounce Of Hydraulically Powered Equipment
App 20040055455 - Tabor, Keith A. ; et al. | 2004-03-25 |
Apparatus for controlling bounce of hydraulically powered equipment
Grant 6,705,079 - Tabor , et al. March 16, 2 | 2004-03-16 |
Electronically controlled hydraulic system for lowering a boom in an emergency
Grant 6,647,718 - Stephenson November 18, 2 | 2003-11-18 |
Hydraulic control circuit for operating a split actuator mechanical mechanism
App 20030159577 - Pfaff, Joseph L. ; et al. | 2003-08-28 |
Electronically controlled hydraulic system for lowering a boom in an emergency
App 20030066417 - Stephenson, Dwight B. | 2003-04-10 |
Hydraulic system with cross function regeneration
Grant 6,502,393 - Stephenson , et al. January 7, 2 | 2003-01-07 |
Hydraulic Circuit With A Return Line Metering Valve And Method Of Operation
App 20020162327 - Stephenson, Dwight B. ; et al. | 2002-11-07 |
Hydraulic circuit with a return line metering valve and method of operation
Grant 6,467,264 - Stephenson , et al. October 22, 2 | 2002-10-22 |
Hydraulic system with three electrohydraulic valves for controlling fluid flow to a load
Grant 6,457,487 - Stephenson , et al. October 1, 2 | 2002-10-01 |
Bidirectional pilot operated control valve
Grant 6,328,275 - Yang , et al. December 11, 2 | 2001-12-11 |
Shift on the go transmission system
Grant 6,202,016 - Stephenson , et al. March 13, 2 | 2001-03-13 |
Two speed gerotor motor with pressurized recirculation
Grant 6,068,460 - Haarstad , et al. May 30, 2 | 2000-05-30 |
Hydrostatic vehicle drive system having improved control thereof
Grant 6,062,332 - Stephenson , et al. May 16, 2 | 2000-05-16 |
Articulated vehicle steering with bogie feedback
Grant 5,732,789 - Stephenson March 31, 1 | 1998-03-31 |
Open-center steering control unit with flow amplification
Grant RE34,746 - Schutten , et al. October 4, 1 | 1994-10-04 |
Controller with reduced travel limit slip
Grant 5,136,844 - Stephenson , et al. August 11, 1 | 1992-08-11 |
Fluid controller with integral auxiliary valving
Grant 5,129,424 - Stephenson , et al. July 14, 1 | 1992-07-14 |
Automatic steering apparatus using reflected signals
Grant 5,019,983 - Schutten , et al. May 28, 1 | 1991-05-28 |
Automatic steering apparatus for crop vehicle
Grant 4,967,362 - Schutten , et al. October 30, 1 | 1990-10-30 |
Pressure flow compensating control circuit
Grant 4,821,514 - Schmidt , et al. April 18, 1 | 1989-04-18 |
Fluid controller with improved pressure balancing
Grant 4,804,016 - Novacek , et al. February 14, 1 | 1989-02-14 |
Control circuit and control valve for radial piston pump
Grant 4,648,803 - Stephenson , et al. March 10, 1 | 1987-03-10 |
| 