| 摘要 |
A system for automatically leveling a vehicle, such as a recreational vehicle installed with a plurality of extensible jacks and disposed at strategic positions on the vehicle underside, and responsive to an automatic level control electronics to extend simultaneously all of the jacks and at different speeds as determined by the angle of vehicle versus gravity and bring vehicle to a level condition. The jacks are stopped when they are use higher current than that used before the jacks contact the ground, to assure ground contact, and the vehicle is level.
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