JACK CONSTRUCTION

摘要

JACK CONSTRUCTION A wheeled jack construction particularly adapted for use in heavy-duty applications is provided. The jack includes a hydraulically operable piston and cylinder unit, a hydraulic fluid pump and a motive means for driving such pump. The unit is self-contained and one embodiment requires no external power source or hose connections. The provided unit may be readily wheeled by hand into place, actuated and removed from a site of use with a minimum of effort. The provided unit is flexible in operation enabling a plurality of motive means to be employed therewith.