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Class Information
Number: 180/441
Name: Motor vehicles > Steering gear > With fluid power assist > Device to control pressure (e.g., valve)
Description: Subject matter designed to vary the fluid pressure in a fluid power assisted steering system.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7624837 |
Hydraulic power steering apparatus |
Dec. 1, 2009 |
| 7537079 |
Passively rephasing piston |
May. 26, 2009 |
| 7510044 |
Power steering apparatus |
Mar. 31, 2009 |
| 7506719 |
Self-synchronizing hydraulic system |
Mar. 24, 2009 |
| 7428945 |
Hydraulic power steering apparatus |
Sep. 30, 2008 |
| 7426977 |
Vehicle power steering system |
Sep. 23, 2008 |
| 7389848 |
Hydraulic power steering assistant |
Jun. 24, 2008 |
| 7387186 |
Power steering apparatus |
Jun. 17, 2008 |
| 7364004 |
Apparatus for use in turning steerable vehicle wheels |
Apr. 29, 2008 |
| 7364006 |
Steering system with leads and pulls compensation |
Apr. 29, 2008 |
| 7357215 |
Steering apparatus for electric industrial vehicle |
Apr. 15, 2008 |
| 7350616 |
Power steering pump having electronic bypass control |
Apr. 1, 2008 |
| 7325645 |
Power steering device |
Feb. 5, 2008 |
| 7306071 |
Hydraulic steering apparatus |
Dec. 11, 2007 |
| 7296651 |
Power steering system frequency suppressor |
Nov. 20, 2007 |
| 7287550 |
Assembly consisting of a valve member and adjustment device for a vehicle servo-steering arrangement |
Oct. 30, 2007 |
| 7258034 |
Rack bar of power steering gearbox |
Aug. 21, 2007 |
| 7249608 |
Flow control for power steering |
Jul. 31, 2007 |
| 7232007 |
Method for operating a power-assisted hydraulic steering system in a motor vehicle |
Jun. 19, 2007 |
| 7225894 |
Power steering apparatus |
Jun. 5, 2007 |
| 7222693 |
Hydraulic control valve and power steering apparatus using the same |
May. 29, 2007 |
| 7210554 |
Power steering system |
May. 1, 2007 |
| 7197956 |
Thrust piece unit for rack-and-pinion steering mechanisms |
Apr. 3, 2007 |
| 7174988 |
Power steering system |
Feb. 13, 2007 |
| 7136732 |
Electric power steering apparatus |
Nov. 14, 2006 |
| 7128182 |
Power steering system |
Oct. 31, 2006 |
| 7114591 |
Steering system for working truck |
Oct. 3, 2006 |
| 7100638 |
Valve for a hydraulic power steering |
Sep. 5, 2006 |
| 7086413 |
Bi-directional damper valve for a hydraulic line, power steering system incorporating the damper valve, and methods of using same |
Aug. 8, 2006 |
| 7086494 |
Power steering system |
Aug. 8, 2006 |
| 7082350 |
Robot system |
Jul. 25, 2006 |
| 7055644 |
Power steering system with hydraulic power assistance |
Jun. 6, 2006 |
| 7036625 |
Integrated hydraulic control system |
May. 2, 2006 |
| 6988581 |
Fuel efficient power steering control system and method |
Jan. 24, 2006 |
| 6953102 |
Power steering system |
Oct. 11, 2005 |
| 6929088 |
Power steering system |
Aug. 16, 2005 |
| 6896093 |
Integral power steering apparatus |
May. 24, 2005 |
| 6880668 |
Power steering device |
Apr. 19, 2005 |
| 6863148 |
Rotary slide valve for servo-assisted steering systems |
Mar. 8, 2005 |
| 6851507 |
Power steering system |
Feb. 8, 2005 |
| 6820714 |
Hydraulically supported steering system |
Nov. 23, 2004 |
| 6782966 |
Power-assisted steering apparatus with a one-piece, monolithic component |
Aug. 31, 2004 |
| 6779625 |
Steering damper |
Aug. 24, 2004 |
| 6668966 |
Power steering device |
Dec. 30, 2003 |
| 6637542 |
Power steering system with noise reduction |
Oct. 28, 2003 |
| 6619420 |
Rack and pinion steering gear with hydraulic yoke assembly |
Sep. 16, 2003 |
| 6581717 |
Hydraulic steering arrangement |
Jun. 24, 2003 |
| 6568500 |
Steering system shudder control |
May. 27, 2003 |
| 6547030 |
Positioning mechanism |
Apr. 15, 2003 |
| 6520278 |
Hydraulic power steering device |
Feb. 18, 2003 |
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