Motor vehicles – Special driving device – Stepper
Patent
1992-10-01
1994-12-13
Tyson, Karin L.
Motor vehicles
Special driving device
Stepper
180 83, 280 528, B62D 57024
Patent
active
053722116
ABSTRACT:
Surmounting obstacles in the path of a robot vehicle is accomplished by rotating the wheel forks of the vehicle about their transverse axes with respect to the vehicle body so as to shift most of the vehicle weight onto the rear wheels, and then driving the vehicle forward so as to drive the now lightly-loaded front wheels (only) over the obstacle. Then, after the front wheels have either surmounted or completely passed the obstacle (depending upon the length of the obstacle), the forks are again rotated about their transverse axes so as to shift most of the vehicle weight onto the front wheels. Then the vehicle is again driven forward so as to drive the now lightly-loaded rear wheels over the obstacle. Once the obstacle has been completely cleared and the vehicle is again on relatively level terrain, the forks are again rotated so as to uniformly distribute the vehicle weight between the front and rear wheels.
REFERENCES:
patent: 1785646 (1930-12-01), Pascoo
patent: 3730287 (1973-05-01), Fletcher
patent: 4119163 (1978-10-01), Ball
patent: 4265326 (1981-05-01), Lauber
patent: 4566707 (1986-01-01), Nitzberg
patent: 4750751 (1988-06-01), Schafer
patent: 4932831 (1990-06-01), White et al.
patent: 4977971 (1990-12-01), Crane, III et al.
Ohm Timothy R.
Wilcox Brian H.
Boehler Anne Marie
Jones Thomas H.
Kusmiss John H.
Miller Guy M.
The United States of America as represented by the Administrator
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