Motor vehicles – Steering gear – With fluid power assist
Reexamination Certificate
2007-10-09
2007-10-09
Morris, Lesley D. (Department: 3611)
Motor vehicles
Steering gear
With fluid power assist
C180S422000
Reexamination Certificate
active
11052061
ABSTRACT:
A variable gear ratio hydraulic power steering device1is provided with a variable ratio transmission mechanism7having a drive motor70; a flow volume control valve41for controlling the discharge flow volume of an oil pump10which circulates operating fluid; and a steering angle sensor310for measuring a handle steering angle input to a steering handle31. A valve controlling controller50is constructed to take thereinto a measured ACT angle which is the rotational angle of the drive motor70and to calculate a target ACT angle for the drive motor70based on the handle steering angle. Further, the valve controlling controller50controls the flow volume control valve41to make the discharge flow volume equal to or greater than a predetermined flow volume when the magnitude of a difference ACT angle which is the difference between the target ACT angle and the measured ACT angle is equal to or greater than a threshold value.
REFERENCES:
patent: 3172299 (1965-03-01), Musser
patent: 4691796 (1987-09-01), Tanooka et al.
patent: 5265019 (1993-11-01), Harara et al.
patent: 5267627 (1993-12-01), Frank et al.
patent: 100 23 584 (2001-11-01), None
patent: 1 283 147 (2003-02-01), None
patent: 1 359 083 (2003-11-01), None
patent: 2-56274 (1990-11-01), None
patent: 10-324263 (1998-12-01), None
Eki Hirozumi
Kodama Kazumasa
Mikamo Satoru
JTEKT Corporation
Morris Lesley D.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Scharich Marc A.
LandOfFree
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