Electric ground working vehicle

Details Electric ground working vehicle Electric ground working vehicle

2011-07-12

2011-07-12

Silbermann, Joanne (Department: 3611)

Motor vehicles

Steering by driving

Independently operable drive motors

C180S006200, C180S006480, C180S006240

Reexamination Certificate

active

07975786

ABSTRACT:
There is provided an electric ground working vehicle including a left wheel and a right wheel, at least one caster, a working apparatus, an acceleration operating element for performing acceleration instructions, a turn operating element for performing turn instructions, and a control unit. The left wheel and the right wheel are independently driven by left and right electric motors respectively. The control unit controls a regenerative brake driving unit so that electric power is regenerated from the left and right electric motors to an electric power source unit when the acceleration operating element is not operated during traveling to regeneratively brake the left and right wheels. The control unit controls the brake force of the wheels so that the brake force of the wheel at the inside of a turn, among the left wheel and the right wheel, can be made greater than the brake force of the wheel at the outside of a turn when the acceleration operating element is not operated during traveling and turn instructions are inputted from the turn operating element.

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European Search Report for Application No./Patent No. 09005314.1-1264/2110295 dated Mar. 12, 2010.
European Patent Office Communication pursuant to Article 94(3) EPC dated Dec. 12, 2010.

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