A recreational vehicle includes a frame, left and right air suspensions, a front jack, a tilt sensor configured to measure lateral and longitudinal tilt data associated with the frame, and a controller. The controller is configured to receive the lateral and longitudinal tilt data to thereby level the frame laterally via operation of the left and right air suspensions and level the frame longitudinally via operation of the left and right air suspensions and the front jack. Methods for performing a leveling operation include utilizing left and right air suspensions of the recreational vehicle in combination with operating a front jack of the recreational vehicle until the recreational vehicle is level along lateral and longitudinal axes.

A pole cradle is disclosed. The pole cradle including a first leg; a second leg; a third leg positioned between and pivotally connected to the first and second legs by a pivot connector extending through the first, second, and third legs, wherein the third leg pivots relative to the first and second legs between a first position and a second position; and a support connector extending between the first and second legs, the support connector providing a stop for the third leg such that in the second position, the third leg abuts against the support connector.

A pole cradle is disclosed. The pole cradle including a first leg; a second leg; a third leg positioned between and pivotally connected to the first and second legs by a pivot connector extending through the first, second, and third legs, wherein the third leg pivots relative to the first and second legs between a first position and a second position; and a support connector extending between the first and second legs, the support connector providing a stop for the third leg such that in the second position, the third leg abuts against the support connector.

A trailer landing gear system and handle assembly including a handle having an engagement bracket portion including a plurality of grooves or a plurality of notches. The handle assembly also includes a pivot bracket pivotably secured to the engagement bracket portion, the pivot bracket including a through-bore arranged to receive a shift shaft of a trailer landing gear assembly, such that the pivot bracket is arranged about the shift shaft and can maintain a constant connection with the shift shaft. The handle assembly further includes a pin secured to a proximate end of the shift shaft, the shift shaft having an imaginary rotational axis wherein the plurality of grooves or the plurality of notches are arranged to engage with the pin such that rotation of the handle about the imaginary rotational axis in a first rotational direction generates a rotational motion of the shift shaft in the first rotational direction.

A trailer landing gear system and handle assembly including a handle having an engagement bracket portion including a plurality of grooves or a plurality of notches. The handle assembly also includes a pivot bracket pivotably secured to the engagement bracket portion, the pivot bracket including a through-bore arranged to receive a shift shaft of a trailer landing gear assembly, such that the pivot bracket is arranged about the shift shaft and can maintain a constant connection with the shift shaft. The handle assembly further includes a pin secured to a proximate end of the shift shaft, the shift shaft having an imaginary rotational axis wherein the plurality of grooves or the plurality of notches are arranged to engage with the pin such that rotation of the handle about the imaginary rotational axis in a first rotational direction generates a rotational motion of the shift shaft in the first rotational direction.

Method for coupling a tractor with a semi-trailer and semi-truck with a tractor and a semi-trailer.

Method for coupling a tractor with a semi-trailer and semi-truck with a tractor and a semi-trailer.

An AGV including a support structure and at least one drive unit connected to the support structure, wherein each drive unit includes a wheel rotatable about a wheel axis and about a steering axis perpendicular to the wheel axis; a wheel motor arranged to drive the wheel about the wheel axis; and a steering motor arranged to drive the wheel about the steering axis; wherein the AGV further includes at least one actuation member movable in an additional degree of freedom; and wherein the at least one actuation member is arranged to be driven by the wheel motor and/or the steering motor of at least one drive unit in the additional degree of freedom. A method of controlling an AGV is also provided.

A jack plate has a pair of transom mounting brackets and a pair of slide plate holders. There is a slide plate holder lower cross member and a pivot pin. The pivot pin rotatably couples the transom mounting brackets and the slide plate holders. There is a slide plate and a single unit hydraulic lifting assembly. The hydraulic lifting assembly is coupled to the lower cross member at a location right of the centerline of the lower cross member.

A method for leveling a jacked vehicle may involve: (a) sensing a pitch angle of the vehicle; (b) sensing a roll angle of the vehicle; (c) producing a pitch reference value that is related to the sensed pitch angle of the vehicle; (d) producing a roll reference value that is related to the sensed roll angle of the vehicle; (e) extending a vehicle jack that affects at least the pitch angle of the vehicle at a speed that is related to the pitch reference value; (f) extending a vehicle jack that affects at least the roll angle of the vehicle at a speed that is related to the roll reference value; and (g) repeating (a)-(f) until the sum of the pitch and roll angles falls below a predetermined angle.