A portable semi-trailer landing-gear motor system and method for use in raising and lowering landing gear on a variety of different semi-trailers by motorized turning of the various-sized drive shafts of the landing gears in appropriate opposing directions, providing motorized performance of an otherwise physically difficult procedure, providing transportability and easy storage within a tractor or truck for use on a variety of semi-trailers in various locations and under various conditions.

A portable semi-trailer landing-gear motor system and method for use in raising and lowering landing gear on a variety of different semi-trailers by motorized turning of the various-sized drive shafts of the landing gears in appropriate opposing directions, providing motorized performance of an otherwise physically difficult procedure, providing transportability and easy storage within a tractor or truck for use on a variety of semi-trailers in various locations and under various conditions.

A lifting column includes a drive unit, a lifting tube, and a transmission assembly. The lifting tube includes a first tube, a second tube, a third tube, a fourth tube, and a fifth tube. The transmission assembly includes a first screw rod, a second screw rod, a third screw rod, and a fourth screw rod. The drive unit is in transmission fit with the first screw rod and drives the first screw rod to rotate. A lower end of the second screw rod has a first nut in transmission with the first screw rod, a lower end of the third screw rod has a second nut in transmission with the second screw rod, a lower end of the fourth screw rod has a third nut in transmission with the third screw rod, and a lower end of the first tube has a fourth nut in transmission with the fourth screw rod.

A lift mechanism. The lift mechanism includes a base configured to support the lift mechanism in an upright position. A neck is upstanding from the base. A lift bracket is coupled to the neck. A coupling bracket includes a U-shape having a base and arms extending from opposing ends of the base. The base is coupled to the lift bracket. A linear actuator is configured to move the lift bracket up and down along the neck.

The linear actuator comprises upper and lower frame portions vertically movable relative to one another along a central axis, and first and second bands that intertwine to form an extractable and retractable column. The second band forms the wall of the vertical column, and it is the second band that is supported by a rotor that is rotatably carried by the lower frame portion, to reduce the mechanical stress on the first band.

Embodiments in the present description are provided for a Bi-pod rescue strut system for use in stabilizing a vehicle or other object. The Bi-pod rescue strut system includes stabilizing feet and support legs. Each of the stabilizing feet is pivotally connected to an end of each support leg so that the stabilizing feet rotate around the support legs. The Bi-pod rescue strut system further includes a yoke disposed at an end of the support legs. The yoke permits the support legs to extend and retract towards or away from the other support leg. The yoke connecting to a telescoping strut extension. The telescopic strut extension extending and coming into contact with vehicle or other object, stabilizing the vehicle or other object.

Kit-of-parts comprising: an outer post and an inner post with an external screw thread, that are rotationally locked and extendable relative to each other; a nut configured to be driven along the external screw thread to selectively secure the inner post relative to the outer post in a drive mode; anda drive, comprising a drive housing accommodating a drive motor, and a connector configured to connect the drive housing with the nut and thereby connect the drive motor with a transmission; wherein the nut comprises: a housing; a rotatable member that is rotatably arranged in the housing, wherein said rotatable member comprises an internal screw thread that is configured to form a mating engagement with the external screw thread; the transmission arranged in the housing and comprising an input shaft that is connectable to the drive, wherein said transmission is configured to selectively: rotate the rotatable member relative to the housing in the drive mode; andform a coupling between the housing and the rotatable member in a manual mode wherein the nut is further configured to be moved manually along the external screw thread, the coupling causing the rotatable member and the housing to jointly rotate relative to the external screw thread, thereby moving the nut in the longitudinal direction along the external screw thread.

Kit-of-parts comprising: an outer post and an inner post with an external screw thread, that are rotationally locked and extendable relative to each other; a nut configured to be driven along the external screw thread to selectively secure the inner post relative to the outer post in a drive mode; anda drive, comprising a drive housing accommodating a drive motor, and a connector configured to connect the drive housing with the nut and thereby connect the drive motor with a transmission; wherein the nut comprises: a housing; a rotatable member that is rotatably arranged in the housing, wherein said rotatable member comprises an internal screw thread that is configured to form a mating engagement with the external screw thread; the transmission arranged in the housing and comprising an input shaft that is connectable to the drive, wherein said transmission is configured to selectively: rotate the rotatable member relative to the housing in the drive mode; andform a coupling between the housing and the rotatable member in a manual mode wherein the nut is further configured to be moved manually along the external screw thread, the coupling causing the rotatable member and the housing to jointly rotate relative to the external screw thread, thereby moving the nut in the longitudinal direction along the external screw thread.

A forming system includes a frame and two forming walls. The two forming walls are positioned at a distance from each other to define a first vertical wall course. One forming wall is supported by the frame such that the one forming wall can be translated toward or away from the respective other forming wall. The frame can be raised to raise the two forming walls to be positioned to pour a second vertical course on top of the first vertical course. The translation of the one forming wall allows for the pouring of the first vertical course with horizontally extending rebar that extends through the one forming wall outside of the first vertical wall course, to tie in to a subsequently poured floor slab. The translation permits the vertical raising of the one forming wall, without striking the extending rebar, to pour the second vertical course on the first vertical course. A worker's platform is provided that is supported by the frame and vertically movable by raising the frame. The worker's platform is located below the one forming wall on a side of the one forming wall opposite the respective other forming wall and is rollable or pivotal to also clear the extending rebar during raising of the frame.