Methods, systems, and apparatus, including computer programs encoded on computer storage media, coordinate dynamic adjustments of a trailer based in part on a user profile associated with a user physically present at the trailer and an activity profile associated with an activity selected to be performed at the trailer. A dynamic adjustment may modify a tilt of a lower surface of the trailer. A dynamic adjustment may modify a dimension(s) of the trailer based in part on a detected object(s). Various dynamic adjustments may occur concurrently, individually and/or sequentially. The trailer may be a moveable trailer for temporary attachment with a vehicle.

Disclosed is a utility trailer assembly capable of transitioning between a towing position and a utility position. The tow position allows for efficient transportation of the utility trailer assembly to and from various locations. In the utility position, the utility trailer assembly provides access to a plurality of storage and multi-use areas and compartments.

Aspects of the disclosure relate to a trailer having a frame suitable for transporting an item, such as an oil drilling pipe. The trailer includes a plurality of stabilizers for supporting the frame over a surface, at least one axle attached to a plurality of wheels. The trailer further includes an axle pin group includes first and second axle pins interconnected to respective hydraulic cylinders. The trailer further includes leaf springs connected to respective sides of the frame and mounted to the axle. Retraction of the axle pins away from the leaf springs enables movement of the frame with respect to the axle due to the weight of the frame, if the stabilizers are retracted. In this configuration, the frame can be raised and lowered with respect to the surface. Methods of use are also disclosed.

Herein disclosed is a mobile golf simulation system, more particularly, a double-bayed golf simulator apparatus mounted to a wheeled trailer that may be readily transported and deployed to remote, particularly outdoor locations. The mobile golf simulation system of the present invention is uniquely designed to include a projection system installed beneath a floating floor that, along with right and left drop-down walls, allows for the creation of an open air platform from which a user may play a realistic form of virtual golf, hitting his ball into a built-in screen.

A mobile generator includes a housing having a top portion, a first side portion, and a second side portion, wherein the first side portion includes an energy-receiving component. The mobile generator also includes an arm pivotally coupled to the housing at a first pivot point and to the first side portion at a second pivot point. A first motion controller is configured to drive rotation of the arm about the first pivot point, and a second motion controller configured to drive rotation of the first side portion about the second pivot point.

A trailer includes a set of removable castor wheels attached to a rear portion thereof, wherein the castor wheels are oriented to face rearwardly when the trailer is oriented in the traditional horizontal position. This arrangement allows the trailer to be tilted upwardly into a vertical orientation so that it rests on the castor wheels, thus providing an apparatus and method for easily moving and storing trailers more efficiently due to the reduced footprint required for such trailer storage. The castor wheels, in one embodiment, include mounting brackets that may be attached to the trailer using a securing rod, similarly to the mounting mechanisms commonly used for removably attaching trailer hitches into trailer hitch sleeves, thus rendering the castor wheels removable from the trailer when they are not in use for storage purposes.

A moveable subframe system, a slider box improvement system, and methods of use are presented. The present disclosure provides the state of the art with a safer, easier to use slider box system. The present disclosure relates generally to a moveable subframe system, a slider box improvement system, and methods of use. The disclosure is a device which relates generally to subframes for heavy-duty vehicles, such as tractor trailers. The disclosure is directed to a moveable subframe for tractor-trailers which makes moving the tandem wheelsets forward and backwards easier and more efficient, especially in heavy loaded circumstances. More specifically, and without limitation, the present disclosure may be used to move and/or shift heavy applications. The disclosure provides a slider box system that enables an operator to easily move and/or adjust the location of the trailer and/or trailer load relative to the axle and/or axles.

A collapsible trailer that includes a longitudinal beam, a first transverse beam, a second transverse, and a third transverse beam. A first vertical arm is pivotally connected to a first end of the first transverse beam and a second vertical arm is pivotally connected to a second end of the first transverse beam. A third vertical arm is pivotally connected to a first end of the second transverse beam and a fourth vertical arm is pivotally connected to a second end of the second transverse beam. A fifth vertical arm is pivotally connected to a first end of the third transverse beam and a sixth vertical arm is pivotally connected to a second end of the third transverse beam. A first wheel is connected to the fifth vertical arm and a second wheel connected to the sixth vertical arm.

Herein disclosed is a mobile golf simulation system, more particularly, a double-bayed golf simulator apparatus mounted to a wheeled trailer that may be readily transported and deployed to remote, particularly outdoor locations. The mobile golf simulation system of the present invention is uniquely designed to include a projection system installed beneath a floating floor that, along with right and left drop-down walls, allows for the creation of an open air platform from which a user may play a realistic form of virtual golf, hitting his ball into a built-in screen.

A powered trailer unit that includes a support frame, and a bed disposed on the support frame. The frame has a first side, a second side opposite the first side, a proximate end and a distal end. The first side has a first guide rail, with the movable wall movingly engaged therewith. There is a mover operatively engaged with the movable wall, the movable wall configured to be moved back and forth along the unit by operation of the mover.