Power assistance vehicle steering mechanisms

Details Power assistance vehicle steering mechanisms Power assistance vehicle steering mechanisms

1988-04-25

1989-09-12

Pekar, John A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

74498, B62D 509, B62D 522

Patent

active

048651508

ABSTRACT:
In a power assisted rack and pinion vehicle steering mechanism, a rack and a pinion engage within a housing. The pinion is mounted on a pinion shaft which is journalled in bearings in a cage. A lever is fixed to the cage and projects from the cage through the housing. The lever has a part-spherical seating portion which engages a part-spherical seat in the housing. Spring means biases the rack into engagement wiht the pinion, and through the cage biases the part-spherical seating portion of the lever into engagement with the seat on the housing. Steering torque imparted on the pinion moves the rack axially and causes a reaction on the pinion which rotates the cage about the center of the part-spherical seating portion. This rocks the lever to actuate power assistance means.

REFERENCES:
patent: 3352170 (1967-11-01), Adams
patent: 3897845 (1975-08-01), Von Lowis
patent: 4299302 (1981-11-01), Nishikawa et al.
patent: 4354422 (1982-10-01), Nishikawa et al.
patent: 4401180 (1983-08-01), Nishikawa et al.
patent: 4593578 (1986-06-01), Kobayashi et al.
patent: 4607717 (1986-08-01), Nakayama

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