Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element
Patent
1993-09-03
1995-11-14
Focarino, Margaret A.
Motor vehicles
Including one or more ski-like or runner members
With at least one surface-engaging propulsion element
91375A, B62D 506
Patent
active
054658055
ABSTRACT:
A vehicle steering system (10, 190, 290) includes inner and outer coaxial valve members (40, 42) which are rotatable relative to each other to port fluid to a vehicle power steering motor (30). A plurality of rocker arms (122, 302) are pivotally connected to the inner valve member (40). Each rocker arm (122, 302) is pivotal relative to the inner valve member (40). Each rocker arm (122, 302) engages a recess (132) in the outer valve member (42). Upon relative rotation between the inner and outer valve members (40, 42), the rocker arms (122, 302) pivot relative to the inner valve member (40). Force is applied to each of the rocker arms (122, 302) to resist pivoting of the rocker arms (122, 302) and relative rotation between the inner and outer valve members (40, 42). In one embodiment, a plurality of pistons (222) are disposed in chambers (220) formed in the outer valve member (42). The pistons (222) are exposed to a fluid pressure which varies as a function of vehicle speed. The pistons (222) are effective to vary the force applied against the rocker arms (122) and the resistance to relative rotation between the valve members (40, 42) as a function of vehicle speed.
REFERENCES:
patent: 4819545 (1989-04-01), Dymond
patent: 5016723 (1991-05-01), Sano
patent: 5046573 (1991-09-01), Jones
patent: 5070957 (1991-12-01), Harkrader et al.
patent: 5190119 (1993-03-01), Nomura et al.
patent: 5233906 (1993-08-01), Bishop et al.
patent: 5291963 (1994-03-01), Sangret
patent: 5293954 (1994-03-01), Dymond
patent: 5297647 (1994-03-01), Duffy
patent: 5307895 (1994-05-01), Duffy
Focarino Margaret A.
Hurley Kevin
TRW Inc.
LandOfFree
Power 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 Power steering system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power steering system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1215290