An apparatus has: a chassis; wheel assemblies at opposed sides of the chassis, each wheel assembly having: a ground engaging wheel; a wheel mount; a control arm pivotally connected between the wheel mount and the chassis; and an actuator pivotally connected between the wheel mount of the ground engaging wheel and the chassis; in which the actuator is operable to, in use, cause the ground engaging wheel to: pitch down with increasing camber from an upright position into a facedown position to lower the chassis; and pitch up with decreasing camber from the facedown position into the upright position to raise the chassis. A method involves lowering the chassis by operating the actuators to pitch the ground engaging wheels down into the facedown position; and raising the chassis by operating the actuators to pitch the ground engaging wheels up into the upright position.

A height adjustable transporting trailer includes a main frame, a plurality of left wheel assemblies, a plurality of right wheel assemblies, and a hydraulic system. The plurality of left wheel assemblies and the plurality of right wheel assemblies are pivotally connected to a rear section of the main frame through a fixed end of a control arm. A free end of the control arm retracts and extends the plurality of left wheel assemblies and the plurality of right wheel assemblies with a hydraulic cylinder of each left wheel assembly and each right wheel assembly that is operated through the hydraulic system. Resultantly, the height adjustable transporting trailer can efficiently load/unload a manufactured house as the main frame can be lowered and positioned underneath the foundation of the manufactured house.

A height adjustable vehicle transport trailer includes a frame having a front end, a back end, and a pair of sides, a draw bar slidably affixed to the front end, a deck affixed to the frame, a pair of brackets each affixed to one pair of sides, each pair of brackets having a swing arm, configured with a first end rotationally hingedly affixed the frame and a second end removeably pinned therein said one of the brackets, a wheel rotationally affixed to an axle, the axle affixed to said swing arm, and a plurality of lift mechanisms affixed to the frame to provide a vertically adjustable trailer.

Certain aspects of the present disclosure provide a trailer, including: a chassis and a plurality of positioning assemblies, each positioning assembly including a positioning arm configured to move between a first position in which the chassis is in a lowered position and a second position in which chassis is in a raised position.

A lowerable vehicle frame with a folding trailer hitch for trailers and other vehicles has a vehicle frame, which can be transitioned between a lowered transit position and a raised deployed position through a swing suspension assembly and a plurality of lifting devices. A folding trailer hitch connected to the forward end of the vehicle frame allows the vehicle frame to be towed, and folds upwards for storage and aesthetics.

A vehicle lowering system having a cargo surface with an adjacent pivoting arm is connected to a vehicle at a pivot point. The pivoting arm moves between a raised and a lowered position by an actuator that is affixed to a frame and the pivoting arm. The frame has an upper portion and a lower portion that provides structure for the portion of the frame that is beyond the pivot point and actuator. The pivot arm has a spindle that holds and allows a wheel to rotate. The spindle has an axis that is always located above the cargo surface. The actuator is movable between an extended position and a retracted position. When the actuator moves between the extended and retracted position, the pivoting arm moves the vehicle between a raised and a lowered position.

A trailer designed to be lowered and raised in shallow water to launch a boat or any other type of watercraft. The lowering and raising of the entire trailer is accomplished by (1) the front end of the trailer transforming the tongue and extension of tongue from a substantially straight alignment to a bent alignment by hingedly rotating the extension of tongue in relation to the tongue as facilitated through the use of a first elongated lever or rod and gravity, (2) the rear or back end of the trailer providing a rotation of an extension about the wheel hub to the wheel using a tube surrounding a rear axle that is actuated through the use of a second elongated lever or rod, and (3) all of this being accomplished at the same time from the interaction of the first elongated lever or rod and the second elongated lever or rod through a second arm located at a transitioning hub.

A trailer system and method of use for towing a load are provided. The trailer system include a trailer body supported by suspension arms on a trailer frame. A hoist mechanism having a winch device and a flexible connector can raise and lower the trailer body by swinging on the suspension arms, which maintain the trailer body in a substantially horizontal orientation during the swing. A modular wheel suspension can be attached to the trailer system.

A height adjustable vehicle transport trailer includes a frame having a front end, a back end, and a pair of sides, a draw bar slidably affixed to the front end, a deck affixed to the frame, a pair of brackets each affixed to one pair of sides, each pair of brackets having a swing arm, configured with a first end rotationally hingedly affixed the frame and a second end removeably pinned therein said one of the brackets, a wheel rotationally affixed to an axel, the axel affixed to said swing arm, and a plurality of lift mechanisms affixed to the frame to provide a vertically adjustable trailer.

A modular heavy goods vehicle (10) comprises a left vehicle module (12) and a differently designed right vehicle module (14), each of which includes a longitudinal frame part (20, 24) and at least two wheel subassemblies (22, 26), and two transverse frame modules (16, 18) which extend in the direction of the width (B) of the vehicle and the free ends of which are releasably connected to the longitudinal frame parts (20, 24), the length of the transverse frame modules being adjustable.