A lifting device including a first platform, a second platform, a gas spring and a locking device is provided. The first platform includes a base and a first column connected to each other. The second platform includes a working table and a second column connected to each other. The second column and the first column are movably connected. The second column has a plurality of engaging holes. The gas spring includes a first end and a second end opposite to each other. The first end connected to the first column, and the second end connected to the second column. The locking device partially disposed at the first column, and a portion of the locking device being adapted to penetrate the engaging holes to fix a relative position between the second column and the first column.

A lifting device including a first platform, a second platform, a gas spring and a locking device is provided. The first platform includes a base and a first column connected to each other. The second platform includes a working table and a second column connected to each other. The second column and the first column are movably connected. The second column has a plurality of engaging holes. The gas spring includes a first end and a second end opposite to each other. The first end connected to the first column, and the second end connected to the second column. The locking device partially disposed at the first column, and a portion of the locking device being adapted to penetrate the engaging holes to fix a relative position between the second column and the first column.

A floor jack locking assembly is presented. The locking assembly may include a locking pin used to mechanically lock out the jack at a specified lift height. The locking assembly may avoid the hydraulic lift cylinder being the only stabilizing component of the jack when supporting a significant load. The locking pin may be coupled to lifting link arms, avoiding the need to have the locking pin inserted into or through the lifting arm of the jack.

A jack has a lifting post, a pair of side legs, adjustable leg extensions, and leg locking mechanisms for locking the leg extensions with respect to the side legs. The lifting post has a bottom element and a top element that slide with respect to each other, and a vehicle engaging hook mounted on the top element. A lifting mechanism lifts the top element with respect to the bottom element, once the side legs have been adjusted.

A jack has a lifting post, a pair of side legs, adjustable leg extensions, and leg locking mechanisms for locking the leg extensions with respect to the side legs. The lifting post has a bottom element and a top element that slide with respect to each other, and a vehicle engaging hook mounted on the top element. A lifting mechanism lifts the top element with respect to the bottom element, once the side legs have been adjusted.

Provided is a lifting device, lifting system and method for lifting a vehicle. The lifting device according to the invention includes a frame with a carrier configured for carrying the vehicle; a drive which acts on the carrier, wherein the drive includes an integrated hydraulic cylinder drive unit configured for raising the carrier with the integrated hydraulic cylinder drive unit including: a housing of a cylinder; a piston rod movable in the housing; a height measuring system configured for measuring the displacement of the piston rod; and an integrated hydraulic fluid tank and motor unit that is configured for driving the piston rod.

A hydraulic floor jack with an integrated support is disclosed. The floor jack can be used with the floor jack oriented in any orientation relative to the orientation of a vehicle to be raised. The support remains suspended above the ground allowing the floor jack to roll along the ground while the vehicle is being raised. The support is then biased firmly on the ground, under weight of the vehicle, while the vehicle is suspended. A method of use of a hydraulic floor jack is also disclosed.

A hydraulic floor jack with an integrated support is disclosed. The floor jack can be used with the floor jack oriented in any orientation relative to the orientation of a vehicle to be raised. The support remains suspended above the ground allowing the floor jack to roll along the ground while the vehicle is being raised. The support is then biased firmly on the ground, under weight of the vehicle, while the vehicle is suspended. A method of use of a hydraulic floor jack is also disclosed.

A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.

A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.