Motor vehicles – Steered by walking attendant
Patent
1991-04-08
1992-11-17
Schacher, Richard A.
Motor vehicles
Steered by walking attendant
192 67P, 192 89A, 192 93R, B62D 5104
Patent
active
051635275
ABSTRACT:
A driven shaft is provided having a free end portion upon which a drive wheel is mounted for rotation relative to the driven shaft and for shifting longitudinally therealong between first and second positions. Drive structure is provided for drivingly connecting the driven shaft to the wheel when the wheel is in the first position thereof and which ineffective to maintain the drive connection between the shaft and the wheel when the wheel is in the second position thereof. Structure is provided for yieldingly biasing wheel the wheel toward the first position thereof and the wheel shaft include axially spaced abutment surfaces between which the narrow end of an elongated wedge is disposed, the elongated wedge being mounted from the shaft for longitudinal shifting of the wedge radially of the shaft. When the narrow end of the wedge is disposed between the abutment surfaces the wheel is in the first position thereof and when the wedge is shifted radially of the shaft to wedge the abutment surfaces apart the wheel is displaced toward the second position thereof.
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