A lift device includes a base, a mast assembly including a first mast section coupled to the base and a second mast section configured to move vertically relative to the first mast section, a platform assembly pivotally coupled to the second mast section, a guardrail assembly, a pivot assembly pivotally coupling the guardrail assembly to the second mast section, and a link arm pivotally coupled between the pivot assembly and the platform assembly, wherein the link arm links pivotal movement of the platform assembly to pivotal movement of the guardrail assembly so that the platform assembly and the guardrail assembly simultaneously pivot between a working position and a folded position.

A lift device includes a base, a mast assembly including a first mast section coupled to the base and a second mast section configured to move vertically relative to the first mast section, a platform assembly pivotally coupled to the second mast section, a guardrail assembly, a pivot assembly pivotally coupling the guardrail assembly to the second mast section, and a link arm pivotally coupled between the pivot assembly and the platform assembly, wherein the link arm links pivotal movement of the platform assembly to pivotal movement of the guardrail assembly so that the platform assembly and the guardrail assembly simultaneously pivot between a working position and a folded position.

In a system and method for replacing a vehicle wheel an electric motor with a drive shaft is concentrically connected to a first gear. The first gear may connect to a symmetrical bolt locking gear array having several bolt locking gears arranged such that each bolt locking gear rotates in the same direction that the first gear rotates. Each bolt locking gear may have a cylindrical hole at its center. The cylindrical hole may be outlined with an inner spiral thread, which connects to a set of power bolts that are outlined in an outer spiral thread which interlocks with the inner spiral thread. A power jack system having a plurality of extendable and collapsible bases is provided in the undercarriage of the vehicle to raise and lower the vehicle. An app running on a mobile device may control the raising/lowering of the vehicle and tightening/loosening of the power bolts.

In a system and method for replacing a vehicle wheel an electric motor with a drive shaft is concentrically connected to a first gear. The first gear may connect to a symmetrical bolt locking gear array having several bolt locking gears arranged such that each bolt locking gear rotates in the same direction that the first gear rotates. Each bolt locking gear may have a cylindrical hole at its center. The cylindrical hole may be outlined with an inner spiral thread, which connects to a set of power bolts that are outlined in an outer spiral thread which interlocks with the inner spiral thread. A power jack system having a plurality of extendable and collapsible bases is provided in the undercarriage of the vehicle to raise and lower the vehicle. An app running on a mobile device may control the raising/lowering of the vehicle and tightening/loosening of the power bolts.

A lightweight trailer includes a front and rear of the trailer, and a chassis. The trailer also includes landing gear, wherein the landing gear may be in a deployed or undeployed state, suspension axles, wheels, and tires. The chassis of the trailer includes a first beam extending from the front of the trailer to the rear of the trailer, wherein the first beam comprises an I-beam cross-sectional shape, a second beam extending from the front of the trailer to the rear of the trailer, wherein the second beam comprises an I-beam cross-sectional shape, and cross-members perpendicular to the first beam and the second beam, wherein the cross-members are placed between the first beam and the second beam, and wherein the cross-members extend from the front of the trailer to the rear of the trailer.

A lightweight trailer includes a front and rear of the trailer, and a chassis. The trailer also includes landing gear, wherein the landing gear may be in a deployed or undeployed state, suspension axles, wheels, and tires. The chassis of the trailer includes a first beam extending from the front of the trailer to the rear of the trailer, wherein the first beam comprises an I-beam cross-sectional shape, a second beam extending from the front of the trailer to the rear of the trailer, wherein the second beam comprises an I-beam cross-sectional shape, and cross-members perpendicular to the first beam and the second beam, wherein the cross-members are placed between the first beam and the second beam, and wherein the cross-members extend from the front of the trailer to the rear of the trailer.

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.

A deck apparatus for a lift device includes a frame, a deck, a member, a cable, and a cylinder. The deck is pivotally coupled with the frame. The member is coupled with the frame and configured to translate along the frame in an upwards direction or a downwards direction. The cable is configured to operably couple the deck with the member. The cylinder is coupled with the frame and the member. The deck is pivotable between a stowed position and a deployed position. Pivoting of the deck from the stowed position to the deployed position drives translation of the member along the frame in the upwards direction.

A deck apparatus for a lift device includes a frame, a deck, a member, a cable, and a cylinder. The deck is pivotally coupled with the frame. The member is coupled with the frame and configured to translate along the frame in an upwards direction or a downwards direction. The cable is configured to operably couple the deck with the member. The cylinder is coupled with the frame and the member. The deck is pivotable between a stowed position and a deployed position. Pivoting of the deck from the stowed position to the deployed position drives translation of the member along the frame in the upwards direction.