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.

A drop table can employ one or more shearing drive couplings to optimize lifting operations. The drop table can have a motor physically attached to a first lifting column via a first rotating input shaft and to a second lifting column via a second rotating input shaft. Each rotating input shaft is connected to the motor by a drive coupling having a shearing insert positioned between a drive shaft and a collar.

A drop table can employ one or more shearing drive couplings to optimize lifting operations. The drop table can have a motor physically attached to a first lifting column via a first rotating input shaft and to a second lifting column via a second rotating input shaft. Each rotating input shaft is connected to the motor by a drive coupling having a shearing insert positioned between a drive shaft and a collar.

A lifting device configured with a linear bearing system operatively associated with a support system configured for raising, lowering and positioning pipes for installation, service, or removal.

A lifting device configured with a linear bearing system operatively associated with a support system configured for raising, lowering and positioning pipes for installation, service, or removal.

An auxiliary device for implanting orthopedic pedicle screws includes a first bearing and a slip ring. The first bearing includes an outer ring and an inner ring, the slip ring is fixed with the inner ring, a brush is set between the slip ring and the outer ring, an X-ray light source and an X-ray receiver opposite to the X-ray light source are set on the inner ring, a drive mechanism is set on an external surface of the outer ring, a support device is set at left and right ends of the outer ring in a radial direction thereof; a swing device is provided at an upper portion of the support device, a workbench is provided at a lower portion of the support device, the swing device is connected with the outer ring. A skid platform unit, a lifting device and a rotating device are set on the workbench.

An auxiliary device for implanting orthopedic pedicle screws includes a first bearing and a slip ring. The first bearing includes an outer ring and an inner ring, the slip ring is fixed with the inner ring, a brush is set between the slip ring and the outer ring, an X-ray light source and an X-ray receiver opposite to the X-ray light source are set on the inner ring, a drive mechanism is set on an external surface of the outer ring, a support device is set at left and right ends of the outer ring in a radial direction thereof; a swing device is provided at an upper portion of the support device, a workbench is provided at a lower portion of the support device, the swing device is connected with the outer ring. A skid platform unit, a lifting device and a rotating device are set on the workbench.

An integrated vehicle jacking assembly includes a plurality of jacks that is each coupled to a bottom side of a vehicle. Each of the jacks is actuatable into an extended position for lifting a respective driver's side or passenger's side of the vehicle upwardly thereby facilitating tires on the respective driver's side or passenger's side of the vehicle to be removed and replaced. A control unit is positioned within the vehicle and the control unit is operationally coupled to each of the jacks. The control unit actuates one or both of the jacks between the extended position and the retracted position. A plurality of wheel chocks is provided for inhibiting the vehicle from rolling when the vehicle is lifted.

A vehicle jacking assembly for raising a vehicle includes a plurality of cylinders, each of which is configured to couple to a frame of a vehicle proximate to a respective wheel of the vehicle. The cylinder comprises a plurality of nested sections so that the cylinder is selectively extensible. An actuator that is coupled to the vehicle is operationally coupled to the plurality of cylinders and an electrical circuit of the vehicle. The actuator is positioned to selectively actuate the plurality of cylinders to extend the cylinders from the frame of the vehicle so that the cylinders contact a surface. The plurality of cylinders thus is configured to raise the vehicle.