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US 5,295,553 AGranted
Rear wheel steerable working vehicle
AssigneeKubota Corporation
InventorsShigeru Morita, Yoshihiro Kawahara, Yoshikazu Togoshi, Terutaka Takei
Life of this patent
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Abstract
A working vehicle comprises front wheels, steerable rear wheels steerable up to a minimum radius turning region lying in a transverse direction substantially perpendicular to a longitudinal direction of a vehicle body, and a rear wheel control device for steering the rear wheels. A restraining device is provided for preventing the rear wheels from being steered to the minimum radius turning region by the rear wheel control device.
Claims7
A working vehicle comprising:
- drivable, non-steerable front wheels,
- drivable rear wheels, said rear wheels being steerable up to a minimum radius turning region lying in a transverse direction substantially perpendicular to a longitudinal direction of a vehicle body,
- rear wheel control means for responding to steering of the rear wheels, the rear wheel control means including a pivotable member which pivots in proportion to an angle in which the rear wheels are being steered, said pivotable member being pivotable along a pivotal locus area corresponding to the minimum radius turning region of the rear wheels and having defined therein an engaging portion,
- restraining means for restraining the rear wheel control means, said restraining means including a restraining member movable into said pivotal locus area to engage said engaging portion to thereby prevent the rear wheels from being steered to the minimum radius region,
- means for remotely operating the restraining means, and
- a propelling transmission device for preventing transmission of driving force to the front wheels while the rear wheels are steered to the minimum radius turning region.
3 more elements
A working vehicle comprising:
- a vehicle body,
- front wheels, steerable rear wheels steerable up to a minimum radius turn region lying in a transverse direction substantially perpendicular to a longitudinal direction of the vehicle body, said front and rear wheels supporting the vehicle body,
- a steering wheel for steering the rear wheels,
- rear wheel control means operatively connected at one end thereof to said steering wheel and at the other end thereof to said rear wheels, said rear wheel control means including a pivotable member which pivots in response to a steering angle of the steering wheel, said pivotable member being pivotable along a pivotal locus area corresponding to the minimum turn radius region of the rear wheels,
- an engaging portion defined in the pivotable member, and
- restraining means mounted on the vehicle body and having a restraining member enterable into said pivotal locus area to engage said engaging portion of said pivotable member to prevent the rear wheels from being further steered to the minimum radius turn region along the pivotal locus area.
3 more elements
Dependencies are inferred from the claim text.