A vehicle lift has lift arms pivoted to a central or to side lifts. A handle is pivoted to an extensible, retractable lift arm end and can be manipulated from outside the vehicle periphery to position the lift arm end in a desired alignment with lift points under the vehicle frame.

A drywall lifting apparatus is described which includes a base having one or more support features for supporting the drywall lifting apparatus on a floor. The drywall lifting apparatus further includes a hydraulic cylinder mounted, at a first portion of the hydraulic cylinder, to the base. The hydraulic cylinder has a second portion movable relative to the first portion through actuation of the hydraulic cylinder. The hydraulic cylinder also includes a drywall support coupled to the second portion of the hydraulic cylinder and a human lift coupled to the drywall support or the second portion of the hydraulic cylinder.

A drywall lifting apparatus is described which includes a base having one or more support features for supporting the drywall lifting apparatus on a floor. The drywall lifting apparatus further includes a hydraulic cylinder mounted, at a first portion of the hydraulic cylinder, to the base. The hydraulic cylinder has a second portion movable relative to the first portion through actuation of the hydraulic cylinder. The hydraulic cylinder also includes a drywall support coupled to the second portion of the hydraulic cylinder and a human lift coupled to the drywall support or the second portion of the hydraulic cylinder.

A large scale hydraulic cylinder assembly, disassembly and maintenance system to hoist a hydraulic cylinder in the air, secure one end of the hydraulic cylinder to a tooling piece secured to a movable hydraulically operated torque head and secure a second end of the hydraulic cylinder to a tooling piece secured to a movable tail stock, and thread or unthread nuts to or from both ends of the hydraulic cylinder under high speed low torque and low speed high torque.

According to an aspect of the present disclosure, a multi-step height adjuster includes a base tube portion including a first base tube and a second base tube vertically reciprocating inside the first base tube; a spindle portion including a first spindle installed inside the first base tube to vertically reciprocate and a second spindle installed inside the second base tube to vertically reciprocate; and an adjustment portion installed in the spindle portion to transmit power to the spindle portion, wherein the first spindle and the second base tube are integrally moved.

A steel stand for supporting heavy structures such as road construction and excavating equipment, either with or without a jacking device, wherein the stand has a central tubular steel core member welded at its ends to parallel steel plates, and having a perimetrically positioned plurality of steel, vertical side members spaced substantially circumferentially around the plates.

A steel stand for supporting heavy structures such as road construction and excavating equipment, either with or without a jacking device, wherein the stand has a central tubular steel core member welded at its ends to parallel steel plates, and having a perimetrically positioned plurality of steel, vertical side members spaced substantially circumferentially around the plates.

A lifting tool for lifting a rotor associated with a generator so as to allow a rotor bearing to be removed from a bearing pedestal beneath the rotor. The tool includes a semi-circular base portion that is bolted to the bearing pedestal and a pair of jack screws mounted to the base portion. A hydraulic ram is mounted to the base portion between the jack screws and is positioned against the rotor when the tool is bolted to the bearing pedestal. The ram is used to lift the rotor away from the bearing and the jack screws are used to hold the rotor up once it is in the desired location, where the ram is then lowered.

A lifting tool for lifting a rotor associated with a generator so as to allow a rotor bearing to be removed from a bearing pedestal beneath the rotor. The tool includes a semi-circular base portion that is bolted to the bearing pedestal and a pair of jack screws mounted to the base portion. A hydraulic ram is mounted to the base portion between the jack screws and is positioned against the rotor when the tool is bolted to the bearing pedestal. The ram is used to lift the rotor away from the bearing and the jack screws are used to hold the rotor up once it is in the desired location, where the ram is then lowered.

A bottle jack may be manufactured differently or converted (retro-fitted) by replacing a conventional shaft in a main lift piston to be inserted and removed, at will, without tools. The threads in the main lift piston may remain or be removed. A yoke or other head is fitted to provide registration, horizontal restraint, or both against a lifted object, component, or surface to prevent sliding off the head in use. In a smooth-walled-shaft embodiment, a set of risers (spacers, adjusters, trims, or shims) provide an extension height of the shaft, elevating the head with respect to the piston prior to beginning to lift the hydraulic piston.