Importance

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Abstract

A mechanical function generating mechanism for a front and rear wheel steered vehicle is operable to generate a rear steer angle output as a function of front steer angle and vehicle speed inputs. The mechanism has a three dimensional cam with a cam surface and a contacting follower. The cam surface is traversed relative to the follower in a first direction in accordance with the front steer angle input and is traversed relative to the follower in a second direction substantially at right angles to the first direction according to the vehicle speed input. The follower is constrained to move in a third direction, determined by the shape of the cam surface, substantially normal to the first and second directions to generate the rear steer angle output.

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First Claim