Variable effort steering system

Details Variable effort steering system Variable effort steering system

1988-11-16

1990-02-20

Hill, Mitchell J.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

60468, 180143, B62D 508

Patent

active

049018124

ABSTRACT:
A bypass type variable effort power steering system including a bypass valve in a bypass duct connected at opposite ends to the working chambers of a steering assist fluid motor and a throttling valve in the bypass duct in series flow relationship with the bypass valve. The throttling valve has a valve element spring biased to a centered position between valve seats of the throttling valve. When the bypass valve is open, the springs hold the valve element in the centered position until bypass flow exceeds a transition flow rate characteristic of substantial pressure differences between the working chambers of the fluid motor. At bypass flow rates above the transition flow rate, a pressure force is induced on the valve element which overcomes the spring force and moves the valve element to a seated position on one of the valve seats. When the valve element is seated, bypass flow is blocked and power assist is maximized.

REFERENCES:
patent: 2657533 (1953-11-01), Schanzlin et al.
patent: 4300650 (1981-11-01), Weber
patent: 4609331 (1986-09-01), Duffy
patent: 4629025 (1986-12-01), Brasier et al.
patent: 4768604 (1988-09-01), Schipper

Affiliated with

Also associated with

Rating

Variable effort steering system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable effort steering system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable effort steering system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1609461