A jack assembly is shown and describe. The jack assembly may include a first tube having first and second end portions and a central portion between the first and second end portions, and a second tube positioned within the first tube and movable with respect to the first tube. The jack assembly may also include an expanded portion on the first tube, the expanded portion having a larger inner diameter than an inner diameter of the central portion, and a bushing attached to the expanded portion, where the bushing generally prevents contact between the first and second tubes.

A jack assembly is shown and describe. The jack assembly may include a first tube having first and second end portions and a central portion between the first and second end portions, and a second tube positioned within the first tube and movable with respect to the first tube. The jack assembly may also include an expanded portion on the first tube, the expanded portion having a larger inner diameter than an inner diameter of the central portion, and a bushing attached to the expanded portion, where the bushing generally prevents contact between the first and second tubes.

Disclosed is a swivel jack that comprises a central element with a wheel assembly to allow the jack to be transported when installed to a trailer. The central element is made up from multiple columns that are telescopically connected to one another to allow the jack to be raised and lowered. The central element is centrally positioned on a plate which rests on a base. Housed between the plate and the base are ball bearings which give rise to the swivel function of the swivel jack. The swivel jack comes equipped with a brake lock level that when depressed stops the wheel on the jack from rotating preventing movement of the trailer jack.

Disclosed is a swivel jack that comprises a central element with a wheel assembly to allow the jack to be transported when installed to a trailer. The central element is made up from multiple columns that are telescopically connected to one another to allow the jack to be raised and lowered. The central element is centrally positioned on a plate which rests on a base. Housed between the plate and the base are ball bearings which give rise to the swivel function of the swivel jack. The swivel jack comes equipped with a brake lock level that when depressed stops the wheel on the jack from rotating preventing movement of the trailer jack.

A removeable vehicle hardtop lift apparatus is described which includes a lower platform, an upper platform and a linear actuator there-between. The upper platform may have adjustable supports, The linear actuator may be configured to move the upper platform linearly. The linear actuator may include a drive mechanism with a hand crank that is operable to cause the linear actuator to raise and lower the upper platform.

The present invention pertains to a trailer jack apparatus designed to facilitate the support and maneuvering of trailers. Specifically, the invention introduces a trailer jack equipped with a high-strength ball bearing at the point of ground contact, enhancing stability, durability, and ease of use during trailer hitching and unhitching processes.

The present invention pertains to a trailer jack apparatus designed to facilitate the support and maneuvering of trailers. Specifically, the invention introduces a trailer jack equipped with a high-strength ball bearing at the point of ground contact, enhancing stability, durability, and ease of use during trailer hitching and unhitching processes.

A removeable vehicle hardtop lift apparatus is described which includes a lower platform, an upper platform and a linear actuator there-between. The upper platform may have adjustable supports, The linear actuator may be configured to move the upper platform linearly. The linear actuator may include a drive mechanism with a hand crank that is operable to cause the linear actuator to raise and lower the upper platform.

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.

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.