Material or article handling – Vertically swinging load support
Patent
1988-10-28
1990-07-24
Spar, Robert J.
Material or article handling
Vertically swinging load support
74471XY, 4146955, 414687, E02F 328
Patent
active
049432052
ABSTRACT:
An earth moving machine comprises an earth moving tool, a plurality of drive elements arranged to move the earth moving tool in different directions, and a control unit operative for actuating the drive elements, the control unit including a single control member which is freely movable from an initial position toward all sides and additionally turnable about at least one turning axle, the control unit being further provided with at least one handle which is fixedly connected with the control member, the control unit also having sensors which respond to the movements of the control body in three mutually perpendicular directions and to the turning of the control body, the sensors being associated with the drive elements so that each of the drive elements causes a movement of the earth moving tool in a direction-synchronous manner with the movements and turning of the control member.
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Eller James
Spar Robert J.
Striker Michael J.
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