Abstract: The present discloses an apparatus for transmitting torque and tightening or loosening threaded fasteners. The apparatus comprising a housing having a driving assembly and a cylinder assembly, a ratchet mechanism being arranged in the driving assembly which is further associated and drivable by the cylinder assembly. The cylinder assembly further comprises a piston assembly and an end cap assembly having a safety ring and a hydraulic cylinder assembly. The apparatus further comprises a hydraulic piston eject safety assembly intended to identify the failure of the apparatus owing to a material fault or overuse/fatigue. The apparatus may further comprise a leakage safety assembly configured to prevent hydraulic fluid from leaking at opening. The apparatus may further comprise a dual reaction assembly, a fastener, a socket, a driver a reaction fixture, an auto-release safety reaction pawl assembly, a quick coupler with thread lock assembly, a cycle counter assembly.

Abstract: A fence assembly comprises a plurality of panels of expanded metal mesh having a plurality of closed meshes. The panels are arranged in zig-zag relationship, and each panel is joined to another panel by means of portion of some of the meshes of the panel adjacent an edge thereof, projecting through meshes of the other panel. The interlocking meshes are intertwined to retain the panels interlocked. The fence assembly may be secured to, or buried in, a trench in the ground.

Abstract: An intruder barrier for mounting on the top or side face of a wall is provided. The intruder barrier consists essentially of a scaling barrier formed from a number of blades radially arranged and rotatable about a longitudinal axis so that any attempt to climb the wall is foiled as the blades simply rotate thus not providing a firm hold for the would-be intruder.