A linear jack includes an outer sleeve, an inner sleeve disposed at least partially within the outer sleeve, and an inner screw disposed at least partially within the inner sleeve. The outer sleeve is threadedly coupled to an outer diameter surface of the inner sleeve. The inner screw is threadedly coupled to an inner diameter surface of the inner sleeve. A thread pitch of the outer sleeve is greater than a thread pitch of the inner screw.

A linear jack includes an outer sleeve, an inner sleeve disposed at least partially within the outer sleeve, and an inner screw disposed at least partially within the inner sleeve. The outer sleeve is threadedly coupled to an outer diameter surface of the inner sleeve. The inner screw is threadedly coupled to an inner diameter surface of the inner sleeve. A thread pitch of the outer sleeve is greater than a thread pitch of the inner screw.

A linear jack includes a first outer sleeve, an inner sleeve disposed at least partially within the first outer sleeve, a second outer sleeve disposed at least partially within the inner sleeve, a translating screw disposed at least partially within the second outer sleeve, and a cover sleeve coupled to the translating screw. The first outer sleeve is threadedly coupled to the inner sleeve. The second outer sleeve is threadedly coupled to the translating screw. The translating screw is disposed at least partially within the cover sleeve. The cover sleeve is configured to translate with the translating screw.

A linear jack includes a first outer sleeve, an inner sleeve disposed at least partially within the first outer sleeve, a second outer sleeve disposed at least partially within the inner sleeve, a translating screw disposed at least partially within the second outer sleeve, and a cover sleeve coupled to the translating screw. The first outer sleeve is threadedly coupled to the inner sleeve. The second outer sleeve is threadedly coupled to the translating screw. The translating screw is disposed at least partially within the cover sleeve. The cover sleeve is configured to translate with the translating screw.

A dump trailer support assembly for supporting a belly dump trailer when the belly dump trailer is not coupled to a tractor includes a box for positioning on a support surface beneath a belly dump trailer. A shaft is slidably integrated into the box such that the shaft can be slid upwardly or downwardly in the box. A support is coupled to the shaft for supporting a bottom of the belly dump trailer when the belly dump trailer is not attached to a tractor. Additionally, the support is comprised of a magnetized material to magnetically engage the bottom of the belly dump trailer and inhibit the belly dump trailer from sliding on the support.

A landing gear system and method of actuating the landing gear system, the system including a first leg assembly, a second leg assembly, a cross-shaft arranged between the two leg assemblies, and a landing gear actuator. The landing gear actuator includes a motor and a coupling shaft which is arranged to couple and decouple the landing gear actuator from the cross-shaft.

A landing gear system and method of actuating the landing gear system, the system including a first leg assembly, a second leg assembly, a cross-shaft arranged between the two leg assemblies, and a landing gear actuator. The landing gear actuator includes a motor and a coupling shaft which is arranged to couple and decouple the landing gear actuator from the cross-shaft.

The present application relates to a transport for transporting a trailer stand. The transport for a trailer stand may be a portable trailer stand and may comprise one or more auxiliary trailer stands. The portable trailer stand may include a pedestal having a top for engaging and supporting the underside of the nose portion of a trailer, a bottom for engaging the ground, wheel means mounted on the pedestal for moving the stand along the ground to and from a position under the nose portion of a trailer, means for adjusting the height of said pedestal, and a member for engaging and securing the auxiliary trailer stand to the portable trailer stand.

The present application relates to a transport for transporting a trailer stand. The transport for a trailer stand may be a portable trailer stand and may comprise one or more auxiliary trailer stands. The portable trailer stand may include a pedestal having a top for engaging and supporting the underside of the nose portion of a trailer, a bottom for engaging the ground, wheel means mounted on the pedestal for moving the stand along the ground to and from a position under the nose portion of a trailer, means for adjusting the height of said pedestal, and a member for engaging and securing the auxiliary trailer stand to the portable trailer stand.

An automated vehicle jack includes an upper plate and a lower plate with a lifting mechanism disposed therebetween. The upper plate is fixedly attached to a lower side of the vehicle chassis, near each of the front and rear tires. The lifting mechanism is a scissor jack formed of a pair of upper arms pivotally connected to the upper plate and a pair of lower arms pivotally coupled with the lower plate. A motorized drive screw operates the lifting mechanism upon receipt of a predetermined command from a control panel in the vehicle passenger compartment or a portable electronic device.