Patent ID: 7025361

Claim:
A vehicle having a vehicle leveling system operable to level the vehicle when the vehicle is stationary, the vehicle leveling system comprising: multiple leveling jacks mounted to the vehicle at spaced locations, each of the leveling jacks being controllably extendable and retractable to level the vehicle cooperatively with the other leveling jacks; and an electronic controller comprising: an extend-enable switch; a retract-enable switch; an all-activate switch; and at least a first group-activate switch, the electronic controller being configured: to generate, upon coordinated actuation of the extend-enable switch and the all-activate switch, an all-extend electronic signal operative to activate simultaneous extension of all of the leveling jacks simultaneously; to generate, upon coordinated actuation of the retract-enable switch and the all-activate switch, an all-retract electronic signal operative to activate simultaneous retraction of all of the leveling jacks simultaneously; to generate, upon coordinated actuation of the extend-enable switch and the first group-activate switch, a first group-extend electronic signal operative to activate simultaneous extension of a first sub-set of the leveling jacks; and to generate, upon coordinated actuation of the retract-enable switch and the first group-activate switch, a first group-retract electronic signal operative to activate simultaneous retraction of the first sub-set of the leveling jacks.