| Patent Number |
Title Of Patent |
Date Issued |
| 7665569 |
Power steering system |
February 23, 2010 |
| A power steering system includes a hydraulic power cylinder having a first and a second hydraulic chambers, for assisting a steering force of a steering mechanism, a first and a second oil passages respectively connected to the first and second hydraulic chambers, a reversible pump d |
| 7374411 |
Oil pump adapted to prevent leakage without using sealing member |
May 20, 2008 |
| An oil pump is provided which includes a cam ring made of a material having a first line expansion coefficient, a pump element rotatably disposed in the cam ring and smaller in an axial length than the cam ring, a first housing member disposed on one of axially opposite sides of the |
| 7325645 |
Power steering device |
February 5, 2008 |
| A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch system switches the ro |
| 6880668 |
Power steering device |
April 19, 2005 |
| A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch system switches the role o |
| 6836090 |
Brushless motor control system |
December 28, 2004 |
| A brushless DC motor control system is arranged to control a command current indicative of a current to be supplied to the brushless motor on the basis of an estimated phase angle and an actual phase angle to control a current supplied to the brushless motor on the basis of an estimated |
| 6568499 |
Power steering system for vehicles |
May 27, 2003 |
| A power steering system is provided which comprises a bypass conduit connecting between first and second communication conduits and having bypass conduit ports. A pair of valves disposed in the bypass conduit for selectively opening and closing the bypass conduit ports in response to |
