Apparatus for engaging beams

Apparatus for holding a workpiece

Apparatus for lifting modular furniture

Apparatus for obtaining substantially equal steplength of each j

Apparatus for skidding a load on a support

Cargo holder jack

Carpenter jack

Gripper assembly for moving drilling rigs

Gripper system for moving drilling rigs

Gripping and skidding apparatus

Gripping jack system

Hand operated jack for a multipurpose jig apparatus of the type

Jacking apparatus

Jacking assembly

Jacking assembly

Jacking device

Lifting and supporting apparatus

Lifting device for raising, lowering and suspending heavy loads

Linear hydraulic winch comprising a pair of self-clamping jaws c

Pipe string lift system