Issued Patents All Time
Showing 1–25 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10268214 | Systems and methods for electrohydraulic valve calibration | — | 2019-04-23 |
| 10072679 | Systems and methods for selectively engaged regeneration of a hydraulic system | Eric P. Hamkins, Jacob Ballweg, Mark Elton | 2018-09-11 |
| 9752597 | Metered fluid source connection to downstream functions in PCLS systems | Casey Buschkopf, Darrell Hesse, Jacob Ballweg, Eric P. Hamkins | 2017-09-05 |
| 9303387 | Hydraulic system with open loop electrohydraulic pressure compensation | Corey K. Quinnell | 2016-04-05 |
| 9091281 | System for allocating fluid from multiple pumps to a plurality of hydraulic functions on a priority basis | Corey K. Quinnell, Jonathan M. Starkey, Eric P. Hamkins | 2015-07-28 |
| 9032724 | Command based method for allocating fluid flow from a plurality of pumps to multiple hydraulic functions | Eric P. Hamkins, Corey K. Quinnell | 2015-05-19 |
| 8256739 | Poppet valve operated by an electrohydraulic poppet pilot valve | — | 2012-09-04 |
| 8215107 | Flow summation system for controlling a variable displacement hydraulic pump | Eric P. Hamkins | 2012-07-10 |
| 7984890 | Pilot operated valve with fast closing poppet | Gennady Shimelfarb, Christopher E. Lentz | 2011-07-26 |
| 7905088 | Energy recovery and reuse techniques for a hydraulic system | Dwight B. Stephenson, Eric P. Hamkins, Keith A. Tabor | 2011-03-15 |
| 7874152 | Hydraulic system with compensation for kinematic position changes of machine members | — | 2011-01-25 |
| 7857281 | Electrohydraulic valve control circuit with magnetic hysteresis compensation | — | 2010-12-28 |
| 7823379 | Energy recovery and reuse methods for a hydraulic system | Eric P. Hamkins, Dwight B. Stephenson, Keith A. Tabor | 2010-11-02 |
| 7753078 | Hybrid hydraulic joystick with an integral pressure sensor and an outlet port | Brian R. Bertolasi, Dwight B. Stephenson | 2010-07-13 |
| 7753077 | Hybrid hydraulic joystick for electrically operating valves | Brian R. Bertolasi | 2010-07-13 |
| 7487707 | Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve | Dwight B. Stephenson | 2009-02-10 |
| 7406982 | Hydraulic system control method using a differential pressure compensated flow coefficient | Keith A. Tabor | 2008-08-05 |
| 7380398 | Hydraulic metering mode transitioning technique for a velocity based control system | — | 2008-06-03 |
| 7377480 | Electrohydraulic valve servomechanism with adaptive resistance estimator | Keith A. Tabor | 2008-05-27 |
| 7373869 | Hydraulic system with mechanism for relieving pressure trapped in an actuator | Keith A. Tabor | 2008-05-20 |
| 7296404 | Apparatus for controlling deceleration of hydraulically powered equipment | — | 2007-11-20 |
| 7210291 | Priority communication protocol for a distributed electrohydraulic system having multiple controllers | — | 2007-05-01 |
| 7194855 | Communication protocol for a distributed electrohydraulic system having multiple controllers | — | 2007-03-27 |
| 7093383 | Automatic hydraulic load leveling system for a work vehicle | Kenneth C. Mennen | 2006-08-22 |
| 7089733 | Hydraulic control valve system with electronic load sense control | Randall S. Jackson, Richard R. Clanton | 2006-08-15 |