A jack apparatus has a main jack body defined by telescopically engaged outer and inner tubes, a selectively positionable clamp assembly positioned along the jack body for selective engagement with the object to which a force is to be applied, and a drive assembly located on and within the jack body. In a further related aspect a retainer is configured for being mounted on the object to be moved or lifted and for positively engaging a receiver on the clamp assembly so as to effectively lock the jack to the object being lifted such as a vehicle for safe and effective operation.

A jack apparatus has a main jack body defined by telescopically engaged outer and inner tubes, a selectively positionable clamp assembly positioned along the jack body for selective engagement with the object to which a force is to be applied, and a drive assembly located on and within the jack body. In a further related aspect a retainer is configured for being mounted on the object to be moved or lifted and for positively engaging a receiver on the clamp assembly so as to effectively lock the jack to the object being lifted such as a vehicle for safe and effective operation.

An apparatus for lifting and moving a pallet rack includes a lifting portion and a supporting portion. The lifting portion and the supporting portion are in telescoping relation to each other and joined by a threaded rod. A swiveling caster is connected to the supporting portion, and a drive shaft is coupled to the threaded rod, with the drive shaft preferably extending out of the lifting portion. A vertical base plate is removably coupled to the lifting portion and includes at least one primary attachment point for attaching a bracket. The bracket is removably affixed to at least one primary attachment point, and preferably includes several secondary attachment points arranged to align with mounting points on the pallet rack so the pallet rack can be lifted by rotating the drive shaft.

A support device, preferably for commercial vehicles such as semi-trailers, includes an inner support tube and an outer support tube moveable relative to one another along a longitudinal axis in a retraction and extension direction; a spindle rotated via a gear section and is arranged such that the spindle is stationary relative to the outer support tube; and a spindle nut which is mounted on the spindle, wherein the spindle nut is fixed on a mounting region of the inner support tube, and the mounting region is configured as a support edge facing the longitudinal axis.

A support device, preferably for commercial vehicles such as semi-trailers, includes an inner support tube and an outer support tube moveable relative to one another along a longitudinal axis in a retraction and extension direction; a spindle rotated via a gear section and is arranged such that the spindle is stationary relative to the outer support tube; and a spindle nut which is mounted on the spindle, wherein the spindle nut is fixed on a mounting region of the inner support tube, and the mounting region is configured as a support edge facing the longitudinal axis.

An apparatus for lifting and moving a pallet rack includes a lifting portion and a supporting portion. The lifting portion and the supporting portion are in telescoping relation to each other and joined by a threaded rod. A swiveling caster is connected to the supporting portion, and a drive shaft is coupled to the threaded rod, with the drive shaft preferably extending out of the lifting portion. A vertical base plate is removably coupled to the lifting portion and includes at least one primary attachment point for attaching a bracket. The bracket is removably affixed to at least one primary attachment point, and preferably includes several secondary attachment points arranged to align with mounting points on the pallet rack so the pallet rack can be lifted by rotating the drive shaft.

An apparatus for lifting and moving a pallet rack includes a lifting portion and a supporting portion. The lifting portion and the supporting portion are in telescoping relation to each other and joined by a threaded rod. A swiveling caster is connected to the supporting portion, and a drive shaft is coupled to the threaded rod, with the drive shaft preferably extending out of the lifting portion. A vertical base plate is removably coupled to the lifting portion and includes at least one primary attachment point for attaching a bracket. The bracket is removably affixed to at least one primary attachment point, and preferably includes several secondary attachment points arranged to align with mounting points on the pallet rack so the pallet rack can be lifted by rotating the drive shaft.

Maneuverable ergonomic trailer stands are disclosed. An example portable trailer stand includes: an elongate upper ledge, a post coupled to the upper ledge, an extendible leg telescopically coupled to the post, the upper ledge being vertically movable to selectively engage and disengage an underside of a trailer based on movement of the extendible leg relative to the post, and a plurality of wheels coupled to the post, the post to maintain the plurality of wheels at a substantially fixed distance from the upper ledge as the upper ledge is vertically moved, each of the plurality of wheels to be equidistant from a vertical axis traversing through a center of the upper ledge.