Electrically assisted power steering system for motor vehicles

Details Electrically assisted power steering system for motor vehicles Electrically assisted power steering system for motor vehicles

1994-07-27

1997-01-07

Hurley, Kevin

Motor vehicles

Steering gear

With electric power assist

180412, 180427, 180428, B62D 504

Patent

active

055907326

ABSTRACT:
An electrically assisted power steering system for a motor vehicle includes a housing, a shaft slidably supported in the housing, a ball-and-nut mechanism operatively mounted on the shaft, and an electric motor mounted in the housing for transmitting rotary force from the electric motor through the ball-and-nut mechanism to the shaft. The ball-and-nut mechanism including a nut assembly disposed around the shaft and having one end rockably and rotatably supported in the housing by a four-point contact bearing or an automatic aligning bearing, and a plurality of balls movably held between an opposite end of the nut assembly and a screw groove defined in the shaft.

REFERENCES:
patent: 4666014 (1987-05-01), Carlson et al.
patent: 4735271 (1988-04-01), Shimizu
patent: 4742882 (1988-05-01), Shimizu et al.
patent: 4773497 (1988-09-01), Carlson et al.
patent: 5083626 (1992-01-01), Abe et al.
patent: 5135067 (1992-08-01), Kohata et al.

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