An automatic vehicle jack assembly includes a plurality of scissor jacks that is each mounted to a bottom side of a vehicle. Each of the scissor jacks is positioned adjacent to a respective one of a plurality of wheels on the vehicle for lifting the respective wheel upwardly from a support surface. Conversely, each of the scissor jacks is actuatable into a retracted position thereby facilitating the respective wheel to roll along the support surface. A control panel is positioned within a cab of the vehicle such that the control panel is accessible to a driver of the vehicle. The control panel is in communication with each of the scissor jacks thereby facilitating the control panel to independently or simultaneously actuate each of the scissor jacks between the extended position or the retracted position.

A wireless portable battery powered vehicle jack. The vehicle jack is comprised of a handle portion and a base portion that is manipulated by a pair of wheels. The handle portion comprises of an emergency stop switch, a control panel, a battery indicator, a remote control, a light, and an electric lock solenoid that is used to manipulate the handle portion. The base portion comprises of a tank, a power unit, a battery, a controller, a safety manifold, a master switch, a hydraulic ram, and a hydraulic conduit. The vehicle jack is designed to provide comfort to the user, to prevent injuries, and to minimize freak accidents.

A wireless portable battery powered vehicle jack. The vehicle jack is comprised of a handle portion and a base portion that is manipulated by a pair of wheels. The handle portion comprises of an emergency stop switch, a control panel, a battery indicator, a remote control, a light, and an electric lock solenoid that is used to manipulate the handle portion. The base portion comprises of a tank, a power unit, a battery, a controller, a safety manifold, a master switch, a hydraulic ram, and a hydraulic conduit. The vehicle jack is designed to provide comfort to the user, to prevent injuries, and to minimize freak accidents.

The present disclosure is a hydraulic jack including a housing that supports a reservoir, a motor, a pump assembly, and a lift assembly. The housing includes a lift portion in which the lift assembly is at least partially supported, and a power supply portion configured to removably receive a power supply. The motor is configured to receive power from the power supply. The pump assembly receives a rotational output from the motor to generate a flow of hydraulic fluid from the reservoir. The lift assembly is extendable between a retracted position and an extended position in response to the flow of hydraulic fluid and is configured as a three-stage lift assembly with a first stage that extendable in a first manner, and second and third stages extendable in a second manner.

The present disclosure is a hydraulic jack including a housing that supports a reservoir, a motor, a pump assembly, and a lift assembly. The housing includes a lift portion in which the lift assembly is at least partially supported, and a power supply portion configured to removably receive a power supply. The motor is configured to receive power from the power supply. The pump assembly receives a rotational output from the motor to generate a flow of hydraulic fluid from the reservoir. The lift assembly is extendable between a retracted position and an extended position in response to the flow of hydraulic fluid and is configured as a three-stage lift assembly with a first stage that extendable in a first manner, and second and third stages extendable in a second manner.

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 mounting plate for mounting a lifting unit in a lifting column which lifting column includes at least two guide tube segments that are insertable substantially concentrically one-into-another and that are movable with respect to one another along their direction of extension in order to change the length of the lifting column. The mounting plate includes a motor-accommodating structure for a drive motor of the lifting unit and an accommodating structure, different from the motor-accommodating structure, for a support component of the lifting unit that is connectable in a rotationally fixed manner to mounting plate. The support component is disposed on a side of the lifting unit remote from or facing away from the drive motor. Also, a lifting column including the mounting plate.

A mounting plate for mounting a lifting unit in a lifting column which lifting column includes at least two guide tube segments that are insertable substantially concentrically one-into-another and that are movable with respect to one another along their direction of extension in order to change the length of the lifting column. The mounting plate includes a motor-accommodating structure for a drive motor of the lifting unit and an accommodating structure, different from the motor-accommodating structure, for a support component of the lifting unit that is connectable in a rotationally fixed manner to mounting plate. The support component is disposed on a side of the lifting unit remote from or facing away from the drive motor. Also, a lifting column including the mounting plate.

A motorized lifting system for use on a semi-trailer. The lifting system may comprise a lifting unit capable of mounting to a jack on the semi-trailer, allowing the lifting unit to raise and lower the dolly legs of the jack. The lifting unit may comprise a motor and a series of sprockets and chains connecting the motor to a drive shaft that mounts to a rod of the jack, such that turning the rod raises or lowers the dolly legs.