Motor vehicles – Steered by walking attendant
Patent
1998-03-27
2000-05-23
Dickson, Paul N.
Motor vehicles
Steered by walking attendant
180 193, 280653, B62D 5104, B62B 100
Patent
active
060655550
ABSTRACT:
A power-assisted wheelbarrow applies an assisting function using an electric motor. Handle shafts connecting to the rear end portions of two handles are covered with grips which are allowed to move axially relative to the handle shafts. More than one steel balls are fitted between the handle shafts and the grips. At the sides of the grips or the handles, pushing force detecting sensors are disposed for detecting the axial movements of the grips relative to the handle shafts in accordance with the pushing forces applied to the grips. The operation of the electric motor is controlled on the basis of the detected values of the two pushing force detecting sensors. As a result, the assisting force by the electric motor can be effectively applied to the wheel of a manual-push type single-wheeled carrier so that manual labor can be reduced while minimizing the consumption of a battery.
REFERENCES:
patent: 2253288 (1941-08-01), De Lucchi
patent: 3896892 (1975-07-01), Kohls et al.
patent: 4589508 (1986-05-01), Hoover et al.
patent: 5489000 (1996-02-01), Hillbohm
patent: 5732786 (1998-03-01), Fujigaki
Hirose Yoshihisa
Yuki Hitoshi
Dickson Paul N.
Fleming Faye M.
Honda Giken Kogyo Kabushiki Kaisha
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