Motor vehicles – Steered by walking attendant – Handle movement controls vehicle drive
Patent
1989-03-13
1990-11-06
Marmor, Charles A.
Motor vehicles
Steered by walking attendant
Handle movement controls vehicle drive
180 65, 180279, 180280, 15319, 153402, 293411, 293102, 293120, B62D 5104, B60L 300
Patent
active
049678620
ABSTRACT:
A tether-guided vehicle and method of controlling same. A tether sensor indicates the angle, .theta., of the tether with respect to the vehicle and the tension, T, on the tether. A contact-sensitive bumper disposed about at least the front periphery of the vehicle indicates the position, P, and force, F, of contact with an obstacle. A drive system moves the vehicle in response to tether angle, .theta., and tension, T, thereby providing a "servo pull" feature. When the vehicle contacts an obstacle, it stops, backs up, turns and resume forward motion to circumnavigate the obstacle, thereby providing an "obstacle avoidance" feature. The servo pull and obstacle avoidance features make the vehicle suitable in a number of applications, such as for canister vacuums, hospital or factory carts, and the like.
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Engelberger Joseph F.
Kazman William S.
Pong William
Johnson Brian L.
Marmor Charles A.
Transitions Research Corporation
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