Material or article handling – Vertically swinging load support
Patent
1993-08-16
1996-11-26
Underwood, Donald W.
Material or article handling
Vertically swinging load support
212279, B66F 504
Patent
active
055778755
ABSTRACT:
A transporter for carrying on a surface an object having a center of gravity, the transporter including a first arm having a longitudinal center line which is arranged to lift the object; a second arm operatively connected to the first arm at one end thereof; a wheel rotatably mounted to the second arm, the wheel having an axis of rotation, the first arm being disposed relative to the wheel so that the longitudinal center line of the first arm intersects the axis of the wheel; a sensor for sensing a variation of an inclination angle of the second arm relative to the surface; and a drive mechanism, connect to the sensor, for driving the first arm, the sensor controlling the drive mechanism such that the drive mechanism moves the first arm in response to the sensed variation of the inclination angle of the second arm relative to the surface so as to maintain the center of gravity of the object above the axis of the wheel regardless of the inclination of the second arm relative to the surface.
REFERENCES:
patent: 3087630 (1963-04-01), Karnow et al.
patent: 4687068 (1987-08-01), Pagett
Tani Electronics Industry Co., Ltd.
Underwood Donald W.
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