Zero-turn radius vehicle with steerable front wheels

Details Zero-turn radius vehicle with steerable front wheels Zero-turn radius vehicle with steerable front wheels

2007-07-03

2007-07-03

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering by driving

Combined with manual steering

C180S006260, C180S006300, C056S014700

Reexamination Certificate

active

10968758

ABSTRACT:
The present invention relates to a zero turning radius vehicle having at least one steerable front wheel and a multistage steering input system separately capable of steering the at least one front wheel and selectively driving the drive wheels. A front wheel steering system comprises at least one oblongated sprocket meshingly connected to a steering shaft. An engagement cam system provides the ability to selectively, independently couple the steering wheel to pump arms driving a first and second drive wheel. A steering cam shaft comprises at least one steering cam that acts on at least one bearing. Once the engagement cam system rotates the at least one bearing into place to receive the at least one steering cam, rotation of the steering cam independently alters the speed of one drive wheel in relation to the other drive wheel in response to steering input provided by the operator.

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