Stair climbing vehicle

Details Stair climbing vehicle Stair climbing vehicle

1994-06-01

1996-04-16

Hill, Mitchell J.

Motor vehicles

Special driving device

Stepper

180 22, 180209, A61G 504, B62B 502, B62D 6112

Patent

active

055073581

ABSTRACT:
A vehicle which goes up and down stairs includes a vehicle body 101, front and rear wheels 102 and 103 provided at the front and rear of the vehicle body 101, respectively, front and rear auxiliary wheels 105 and 107 for lifting up or down the front and rear wheels 102 and 103 by one step of stairs, respectively, a driving unit for driving each wheel, a pivoting unit for pivoting the front and rear auxiliary wheels 105 and 107, sensors 121 to 124 for detecting a riser portion of stairs, and a control unit 120 for controlling the driving unit and the rotating unit in accordance with results of the sensors 121 to 124. Since the vehicle goes up and down stairs by rotation of the auxiliary wheels 105 and 107, a corner portion of the step of stairs is not damaged while the vehicle goes up and down stairs.

REFERENCES:
patent: 4569409 (1986-02-01), Kluth
patent: 4674584 (1987-06-01), Watkins
patent: 4915184 (1990-04-01), Watkins

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