Abstract: A tong assembly for manipulating tubulars can include a tong arm assembly for makeup and breakout that has a floating jaw or non-moving jaw, a breakup arm, and a hydraulic control assembly. The tong assembly can include a remote control for remotely controlling operations and providing for improved safety.

Abstract: A rig with a tong assembly for manipulating tubulars can include a tong arm assembly for makeup and breakout of tubulars that has a floating jaw or non-moving jaw, a breakup arm, and a hydraulic control assembly. The tong assembly can include a remote control for remotely controlling operation of the tong assembly for improved safety.

Abstract: A method for making-up or breaking-out a pair of tubulars using a tong assembly of a drilling rig. The method uses a pair of chain assemblies connected to hydraulic chain cylinders, a first jaw connected to a first arm for supporting a first tubular, a second jaw connected to a break-out body between the break-out body and the second chain cylinder, and a make out break-out cylinder to push the chain cylinders in a make-up rotation or a break-out rotation allowing the method to provide changes of direction without changing tong assembly configuration or position.

Abstract: A tong arm assembly configured to engage a tubular can include an arm frame with a recess, gripping cylinder holes, and a makeup/breakout cylinder hole. A floating jaw can be partially disposed within the recess and securable to the arm frame. The floating jaw can include tong dies attached opposite the recess. A gripping cylinder with a moveable rod can be secured to the arm frame. The gripping cylinder can nest adjacent to the arm frame and extend along the arm frame. A counter gripping member can be connected to the moveable rod. Opposite tong dies can be on the counter gripping member. A multi-function L-link assembly can engage the counter gripping member and the arm frame.

Abstract: A hand operated gripping tool includes a first jaw fixedly connected with a first jaw handle, a second jaw movable relative to the first jaw such that the first and second jaws cooperably define a variable size space therebetween for receiving a part to be gripped, a second jaw handle pivotally connected with the second jaw for moving the second jaw relative to the first jaw, a link system pivotally connected to the second jaw handle and having a guided portion selectively engageable with a plurality of guide portions provided on the first jaw handle. The guided portion being engageable with a first of the guide portions to define a first range of movement of the second jaw towards the first jaw and a second of the guide portions to define a second range of movement of the second jaw towards the first jaw.

Abstract: A wrench has a head portion (10) adapted to engage and apply torque to a workpiece, including a ring member (14) which surrounds the workpiece and has a fixed end (16) and a free end (18) such that, when the ring engages a workpiece and a torque is applied in a predetermined direction (48), the ring closes around the workpiece, increasing the grip between the wrench and the workpiece even if the workpiece is substantially worn, damaged or undersized.

Abstract: A ratcheting, open-end wrench concurrently engages more than half the corners of a nub during torquing. In preferred embodiments a wrench has a contacting cavity for receiving and torquing a nut, bolt head or other angularized nub. A chain carries a plurality of teeth about the inner perimeter of the cavity, and the chain is ratcheted so that the teeth move readily in one direction, but can be blocked from moving in the opposite direction. The teeth are arranged on the chain such that the cavity changes shape from an open configuration in which the nub can be received into the cavity, and a closed configuration in which the nub is locked into the cavity.

Abstract: Disclosed is a spanner wrench for and method of removing a torque-locked torsion spring from a winding cone. The wrench retrieves and engages the terminal end of the spring to apply both a radially outwardly directed force to such terminal end of the spring while simultaneously applying a tangentially-directed force which is counter to the torque lock to remove the spring from the cone without damage to the cone. In its preferred form the wrench is adjustable so as to be able to accommodate spring and cone assemblies of widely varying diameters.

Abstract: A combined wrench, locking pliers and chain clamp using a toggle for the gripping and clamping functions.

Abstract: A fixture for mounting sprocket wheels on and removing them from the free-wheel units of bicycles, comprising a first tool in the form of an elongated metal plate, having a handgrip and a functional part provided with a plurality of recesses shaped to receive and mate with elements of a free-wheel unit, and cooperating with at least two locking pin members, and a second tool comprising a handle, provided at one end with a half-moon shaped body having a length of bicycle transmission chain pivotally connected to one end thereof. The recesses in said first tool are apt to mate with the outer profile as well as with the wall of an inner hole of the free-wheel unit elements having to be applied to said tool. The second tool comprises, in order to engage the sprocket wheels of said free-wheel unit, on one hand said transmission chain length and, on the other hand, a pair of chain links mounted so as to form an articulated parallelogram.

Abstract: A wrench adapted to turn a rotatable workpiece or tool about its central axis. The wrench comprises an elongated handle received through a bracket having an inwardly facing surface that engages the workpiece or tool. A pivotal connection between the inner end of the handle and the bracket permits adjustment of the handle about a pivot axis perpendicular to the longitudinal handle axis. A flexible loop is provided as a work-engaging member. It has one end connected to the inner end of the handle at one side of the pivot axis and its remaining end connected to the inner end of the handle at the opposite side of the pivot axis. Adjustment means is provided by manipulation of a sleeve surrounding a rigid inner handle section or shaft, the sleeve being both rotatable and axially movable with respect to the inner shaft. Radial cam surfaces are formed on the inner end of the sleeve and the outer end of the bracket to vary the angular position of the handle with respect to the bracket about the transverse pivot axis.

Abstract: A fixture for the assembly and disassembly of special gears (particularly of gears of free-wheels applied to the rear wheel of bicycles) consists of a first tool which comprises an appropriately shaped, metal elongated plate, having a smooth handgrip and a functional part provided with a plurality of impressions corresponding to elements of a free-wheel unit and apt to house at least part of said elements by mating with their shape so as to prevent rotation thereof, threaded holes being provided at the center of said impressions, and at least two locking pin members apt to be screwed into said threaded holes for locking on the plate, in said impressions, the elements of the free-wheel unit having to be handled, and of a second tool of the type comprising a handle terminating with a halfmoon shaped body, to an end of which is pivoted a transmission chain section for bicycles, a notch being provided along the whole inner archway of the half-moon shaped body of said tool, for housing the periphery of a gear with

Abstract: A chain wrench has a handle having a chain element pivoted to the handle by a pair of links to permit passage of the free end of the chain between the links, whereby the chain may be wrapped in full circumscribing relation to a workpiece. The handle has a camming surface and teeth elements positioned to confront the exposed surface of the chain when it is wrapped around the workpiece. The chain has a cleated surface on one side and has a smooth surface on the opposite side. In one mode of operation, the cleated surface confronts the workpiece to engage the same, whereby the cam surface causes the cleats to grip the workpiece and anchor the chain at that point when said handle is actuated to apply torque to the workpiece, the smooth surface permitting the chain to slide over said camming surface prior to applying torquing action upon said handle to afford snug engagement of the chain about substantially the entire circumference of the workpiece.

Abstract: The ratchet wrench of this invention is of two piece construction comprising a rigid pawl handle, and a spring strap cooperating with the pawl handle. The pawl handle has a squared-off end and is provided with two integral pawl teeth extending from one side, which are adapted to engage and drive a splined bit. The spring strap is u-shaped, extending over the squared end and pawl teeth of the handle, and along both sides of the handle. The spring strap is fixed to the handle sides at its two co-extending ends to hold the spring strap and pawl handle in substantially fixed position.The closed end of the spring strap extends in an arc over the squared end of the pawl handle in such a way as to define a D-shaped opening, adapted to receive and to precisely position the splined bit.