Working-machine steering apparatus

Details Working-machine steering apparatus Working-machine steering apparatus

2005-10-28

2008-10-14

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering by driving

Combined with manual steering

C180S006200, C180S006700

Reexamination Certificate

active

07434637

ABSTRACT:
Working-machine steering apparatus includes an assist mechanism for reducing a force necessary for operating any one of left and right operating members. First and second cord members, connected to the left and right operating members, are wound on first and second pulleys in a U shape with given pre-slack. As a human operator operates any one of the left and right operating members, the corresponding left or right cord member is brought into close contact with the first or second pulley, so that rotation of a drive source is transmitted to the first or second pulley via a rotation shaft. The necessary operating force of the left and right operating members can be reduced using the rotation of the drive source via the assist mechanism.

REFERENCES:
patent: 3743043 (1973-07-01), Gelinas
patent: 4977970 (1990-12-01), Steiger
patent: 5918691 (1999-07-01), Ishii
patent: 02168067 (1990-06-01), None

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