Assignee
HYDRAFORCE INC
US22 patents
Top patents by PatentIndex Score
US7069945B2Jul 4, 2006
Cartridge relief valve with improved stability
HYDRAFORCE INC19 citations92
US7063100B2Jun 20, 2006
Flow regulator with pressure relief combination valve
HYDRAFORCE INC45 citations92
US6966329B2Nov 22, 2005
Proportional pilot-operated flow control valve
HYDRAFORCE INC54 citations92
US6805155B2Oct 19, 2004
Cartridge relief valve with improved stability
HYDRAFORCE INC25 citations92
US6167906B1Jan 2, 2001
Bi-directional flow control valve
HYDRAFORCE INC25 citations92
US6267350B1Jul 31, 2001
Valve having a mechanism for controlling a nonlinear force
HYDRAFORCE INC32 citations89
US7921880B2Apr 12, 2011
Three-way poppet valve with intermediate pilot port
HYDRAFORCE INC39 citations86
US6554014B2Apr 29, 2003
Proportional pilot operated directional valve
HYDRAFORCE INC29 citations86
US6789570B2Sep 14, 2004
Hydraulic valve with a position sensor
HYDRAFORCE INC34 citations83
US6116263ASep 12, 2000
Proportional priority flow regulator with reverse flow control
HYDRAFORCE INC19 citations83
US7137406B2Nov 21, 2006
Self-cleaning filter
HYDRAFORCE INC17 citations80
US7261030B2Aug 28, 2007
Method and system for improving stability of hydraulic systems with load sense
HYDRAFORCE INC16 citations75
US12234842B2Feb 25, 2025
Pressure control valve with reduced pilot flow and hydraulic control system with the same
HYDRAFORCE INC2 citations69
US10641298B2May 5, 2020
Hydraulic control valve for controlling pressure drop across motors
HYDRAFORCE INC2 citations69
US10378559B2Aug 13, 2019
Hydraulic suspension for vehicle and multi-functional proportional control valve for the same
HYDRAFORCE INC3 citations68
US12012978B2Jun 18, 2024
Hydraulic cartridge valve with position monitoring mechanism and hydraulic control system and method
HYDRAFORCE INC1 citations53
US12181055B2Dec 31, 2024
Hydraulic balancing control valve and ride control system incorporatng same
HYDRAFORCE INC0 citations49
US11187330B2Nov 30, 2021
Hydraulic balancing control valve and ride control system incorporating same
HYDRAFORCE INC0 citations49
US9964965B2May 8, 2018
Method of controlling proportional motion control valve
HYDRAFORCE INC1 citations47
US11953031B2Apr 9, 2024
Hydraulic control system and method with electro-proportional pressure valve and integral check
HYDRAFORCE INC0 citations40
US11946496B2Apr 2, 2024
Hydraulic control valve with visual identification system
HYDRAFORCE INC0 citations38
US10626986B2Apr 21, 2020
Hydraulic motor drive system for controlling high inertial load rotary components
HYDRAFORCE INC0 citations34