A trailer stabilizing device for stabilizing a parked freight trailer, the trailer stabilizing device comprising a frame separate from the support frame of the parked freight trailer, the stabilizing device frame having mounted thereto wheels and a hitch, the stabilizing device including a repositionable jack.

A manual trailer lifting jack with drill power option includes: an outer tube; an inner tube that is telescopically slidable within the outer tube; a foot that is connected to a bottom of the outer tube; a top block that is connected to a top of the outer tube; a threaded rod that pass through a center of the top block and is rotatably held within the outer tube and fixed from axial movement relative to the outer tube; a threaded block that is connected to a top of the inner tube and has threads that engage the threaded rod so that a rotation of the threaded rod causes the inner tube to slide axially within the outer tube; a driving gear that is connect the top block and drives the threaded rod; a gear shaft that includes a bevel gear and a hexagonal head; and a gear housing that houses the gear shaft, driving gear, and the top block.

A manual trailer lifting jack with drill power option includes: an outer tube; an inner tube that is telescopically slidable within the outer tube; a foot that is connected to a bottom of the outer tube; a top block that is connected to a top of the outer tube; a threaded rod that pass through a center of the top block and is rotatably held within the outer tube and fixed from axial movement relative to the outer tube; a threaded block that is connected to a top of the inner tube and has threads that engage the threaded rod so that a rotation of the threaded rod causes the inner tube to slide axially within the outer tube; a driving gear that is connect the top block and drives the threaded rod; a gear shaft that includes a bevel gear and a hexagonal head; and a gear housing that houses the gear shaft, driving gear, and the top block.

A manual trailer lifting jack with drill power option includes: an outer tube; an inner tube that is telescopically slidable within the outer tube; a foot that is connected to a bottom of the outer tube; a top block that is connected to a top of the outer tube; a threaded rod that pass through a center of the top block and is rotatably held within the outer tube and fixed from axial movement relative to the outer tube; a threaded block that is connected to a top of the inner tube and has threads that engage the threaded rod so that a rotation of the threaded rod causes the inner tube to slide axially within the outer tube; a driving gear that is connect the top block and drives the threaded rod; a gear shaft that includes a bevel gear and a hexagonal head; and a gear housing that houses the gear shaft, driving gear, and the top block.

A manual trailer lifting jack with drill power option includes: an outer tube; an inner tube that is telescopically slidable within the outer tube; a foot that is connected to a bottom of the outer tube; a top block that is connected to a top of the outer tube; a threaded rod that pass through a center of the top block and is rotatably held within the outer tube and fixed from axial movement relative to the outer tube; a threaded block that is connected to a top of the inner tube and has threads that engage the threaded rod so that a rotation of the threaded rod causes the inner tube to slide axially within the outer tube; a driving gear that is connect the top block and drives the threaded rod; a gear shaft that includes a bevel gear and a hexagonal head; and a gear housing that houses the gear shaft, driving gear, and the top block.

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.

A landing gear assembly configured to support a trailer includes a leg assembly including a first leg member and a second leg member telescopingly received within the first leg member and adjustable between a retracted position and an extended position, a gear assembly operably coupled to the leg assembly and configured to move the first leg member between the retracted and extended positions, wherein the gear assembly includes a first shaft member, and a first bushing member rotatably supporting a first end of the first shaft member within the first leg member, wherein the first bushing member is attached to the first leg member via at least one first mechanical fastener, and wherein the first bushing member comprises a powdered metal.

A landing gear assembly configured to support a trailer includes a leg assembly including a first leg member and a second leg member telescopingly received within the first leg member and adjustable between a retracted position and an extended position, a gear assembly operably coupled to the leg assembly and configured to move the first leg member between the retracted and extended positions, wherein the gear assembly includes a first shaft member, and a first bushing member rotatably supporting a first end of the first shaft member within the first leg member, wherein the first bushing member is attached to the first leg member via at least one first mechanical fastener, and wherein the first bushing member comprises a powdered metal.

A landing gear assembly configured to support a trailer includes a leg assembly including first and second leg members, a gear assembly coupled to the leg assembly and configured to move the first leg member between retracted and extended positions, wherein the gear assembly includes a first shaft member and a first gear where the first shaft member and the first gear are a single, integral piece, first and second bushing members each including a bushing portion having a bushing portion and a closed end and rotatably supporting ends of the first shaft member within the first leg member.