Patent ID: 6117040
Filing Date: 2000-09-12
Classification: B60K,F16H

Abstract:
A multi-speed wheel hub comprising:a housing;an input member, including a sun gear, disposed in the housing;a planet carrier, including a plurality of planet gears, disposed about the sun gear;a ring gear disposed about the planet gears; anda shifting system including:a piston;a first shift ring mechanically coupled to the piston by a plurality of first push rods; anda second shift ring mechanically coupled to the first shift ring by a plurality of second push rods,wherein the piston activates the first and second shift rings;wherein, when the first shift ring is engaged and the second shift ring is disengaged, the ring gear is locked to the housing so that a torque is transmitted from the sun gear through the planet carrier to a wheel, andwherein, when the first shift ring is disengaged and the second shift ring is engaged, the ring gear is unlocked from the housing and the housing is locked to the input member so that torque is transmitted from the sun gear to the wheel.