| 摘要 |
A vehicle body, such as that of a boat, with laterally spaced rearwardly mounted runners, and first pivot means mounting said runners for limited travel about the axis of said pivot, and substantially transverse to the direction of travel, a forward mounted ski or runner with second pivot means mounting said ski or runner, for arcuate travel about the axis of said second pivot means to steer the vehicle: a bracket assembly secured to the rear of the vehicle by and including laterally spaced parallel, opposed channels, a propulsion unit, having a motor and drive wheel mounted upon a frame, said frame carrying spaced, parallel slide members to be received in said channel members to resist lateral or forward and rearward movement of the mounting assembly, but to afford up and down sliding travel in said channels to accomodate the propulsion unit to irregularities in the surface over which the vehicle is driven, with means attached to said frame engageable with further means secured to the rear portion of the boat to establish a limit for the downward travel of said unit.
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