A landing gear system including a landing gear actuator assembly arranged to selectably provide an increased torque output to a cross-shaft adaptor rotationally coupled to a cross-shaft of a trailer landing gear assembly. A rotational engagement mechanism is arranged to, in response to a remote signal, shift a rotational engagement mechanism to selectably couple the cross-shaft adaptor with a light gear set or selectably couple the cross-shaft adaptor with a heavy gear set. The landing gear actuator includes a slip-clutch assembly to dampen, reduce, or eliminate rotational shock caused when retracting or extending the legs of the landing gear system.

A low-profile trailer jack reduces the height of the jack above the trailer a-frame by over 50% eliminating pickup tailgate interference when lowered by a vehicle operator. This is accomplished using a two-stage concentric lead screw design rather than a single screw as described in prior art. The two-stage design also allows for increased lowering and raising speed of the jack foot by using the first stage, which is a larger outer screw with larger pitch, generating a faster speed when no load is present. The second stage inner screw is engaged when a load is present and a slower speed with greater mechanical advantage is required.

A low-profile trailer jack reduces the height of the jack above the trailer a-frame by over 50% eliminating pickup tailgate interference when lowered by a vehicle operator. This is accomplished using a two-stage concentric lead screw design rather than a single screw as described in prior art. The two-stage design also allows for increased lowering and raising speed of the jack foot by using the first stage, which is a larger outer screw with larger pitch, generating a faster speed when no load is present. The second stage inner screw is engaged when a load is present and a slower speed with greater mechanical advantage is required.

An apparatus for a crank handle of a landing gear. The crank handle comprising an assembly with a rotating arm, a mounting end, a handle arm, and a handle grip. The handle grip mounted to the handle arm. The handle grip rotatable about the handle arm at a handle end of the crank handle assembly.

A linear jack includes a first sleeve disposed at least partially within a second sleeve (the first sleeve and the second sleeve collectively a high speed assembly), a third sleeve disposed at least partially within the first sleeve, and a translating screw disposed at least partially within the third sleeve (the third sleeve and the translating screw collectively a low speed assembly). The linear jack further includes a fourth sleeve fixed to the second sleeve and configured to translate therewith. The fourth sleeve extends over the third sleeve and transfers axial loads between the second sleeve and the third sleeve to extend the high speed assembly together with the low speed assembly from an outer case of the linear jack.

An under hoist support stand in which the spin handle to turn the threaded support screw can be selectively engaged and disengaged from the support screw and allows the screw to be positioned along a longitudinal axis of the support stand.

An under hoist support stand in which the spin handle to turn the threaded support screw can be selectively engaged and disengaged from the support screw and allows the screw to be positioned along a longitudinal axis of the support stand.

A parked freight trailer stabilizer and restraint comprising: (a) a kingpin receiver configured to lock onto a kingpin of a parked freight trailer; (b) a jack operatively coupled to the kingpin receiver, the jack repositionable between a retracted position and an extended position; (c) a tail hold operatively coupled to the kingpin receiver, the tail hold repositionable between a stowed position and a restraining position, the tail hold configured to engage a ground mount; and, (d) a transport receiver configured to engage a transport vehicle.

A parked freight trailer stabilizer and restraint comprising: (a) a kingpin receiver configured to lock onto a kingpin of a parked freight trailer; (b) a jack operatively coupled to the kingpin receiver, the jack repositionable between a retracted position and an extended position; (c) a tail hold operatively coupled to the kingpin receiver, the tail hold repositionable between a stowed position and a restraining position, the tail hold configured to engage a ground mount; and, (d) a transport receiver configured to engage a transport vehicle.

Disclosed are embodiments of motor mounts for attaching a motor to an input shaft of trailer landing gear. One embodiment of the motor mount has an L-shaped frame bracket having first and second plates at right angle. The first plate is secured to a frame part of the trailer. The motor mount also has an L-shaped motor bracket having first and second plates at a right angle. The motor bracket first plate has an opening therethrough. The motor bracket second plate is secured to the frame bracket second plate. A gearbox is operatively connected to the electric motor and is secured to the motor bracket first plate. The gearbox has an outwardly extending drive mechanism that extends through the opening in the motor bracket first plate and connects to the landing gear input shaft. Another embodiment is a Z-shaped motor mount that includes first, second, and third plates.