Abstract: An extraction tool for removing an installed artificial disc from a spine is provided. The extraction tool is impacted between the artificial disc and the vertebrae and engages the artificial disc to allow a surgeon to remove the artificial disc from the spine.

Abstract: The device (1) for the locking of pieces on machine tools comprises: —a base body (2, 3, 4) fixable to a machine tool (M); —a gripping assembly (5, 6, 7) for gripping a piece (P) to be machined having a cavity (C) with a cavity axis (A1), the gripping assembly (5, 6, 7) comprising: —a main head (5) having a main axis (A3) and associated with the base body (2, 3, 4) with a lateral play adapted to allow the shift of the main head (5) along a plane of alignment (B) substantially orthogonal to the main axis (A3); —at least two self-centering locking elements (6) associated with the main head (5) in a movable way; and —movement means (7) of the self-centering locking elements (6); —removable locking means (18) adapted to temporarily lock the main head (5).

Abstract: An orthopedic tool for loosening the connection between orthopedic components. In one embodiment, the orthopedic tool includes a housing and a wedge. The housing has a head, an upper portion, a lower portion, and an opening between the upper and lower portions. The wedge is positioned at least partially between the upper portion and the lower portion of the housing and is actuatable to move toward the head of the housing. When at least a portion of the head of the housing is placed in mating engagement with the junction between two assembled orthopedic components, advancement of the wedge towards the head results in separation of the upper portion and lower portion of the housing. Thus, as the wedge is advanced toward the head, the upper and lower portions of the housing are separated, which results in corresponding separation of the assembled orthopedic components.

Abstract: Apparatus and methods are provided for expanded driving heads used to drive torque-based fasteners (e.g., screws) into materials. The apparatus comprises a driving head that includes multiple prongs. Each prong comprises a tip adapted to engage a receptacle of a torque-based fastener. The tips of the prongs are also adapted to move apart from each other, thereby expanding the size of the driving head and engaging the receptacle of the torque-based fastener.

Abstract: An expander for concentrically expanding a cylindrical member, the expander with a tapered block, a plurality of segments, each having an inner surface at least partially in contact with the tapered surface of the tapered block and the segments arranged to move in concert with each other relative to the block, and a pair of engaging features being provided for each segment, each pair comprising a first engagement feature on one of the segments and a second engagement feature on the block, the pairs of engaging features being arranged to maintain equal circumferential spacing of the segments around the block and to constrain movement of the segments in a direction that is coaxial with the block, each pair of engaging features being located away from the circumferential edges of their respective segment.

Abstract: A slide stop device of a hexagonal spanner comprises a spanner body; one end of the spanner body having a driving portion. The driving portion has at least one axial slots. Each slot is extended from a center of one end surface of the driving portion to an edge of the driving portion. An axial screw hole is formed in the center of driving portion; an outer end of the screw hole being a tapered shape. In use, a screwing resisting element is inserted into the screw hole. When the screwing resisting element is not tightly adhered to an wall of the screw hole, the screwing resisting element can expand the driving portion outwards to prevent the screwing resisting element from sliding.

Abstract: A tool for removing a drain basket of the type in threaded engagement at the drain pipe of a sink, tub or the like. The tool has a body with a lug at the upper end, an intermediate section having external left-hand threads and a lower skirt section which is conical. Curved shoes are retained about the lower section by an elastomeric band. A nut is engaged with the threaded section and a washer is interposed between the nut and upper ends of the shoes. The tool is inserted into a drain and the body held by a wrench engaging the lug. The nut is turned with a second wrench in a counter-clockwise direction causing the skirt to move upwardly relative to the shoes forcing the shoes outwardly and downwardly into tight engagement with the drain basket.

Abstract: A plumbing tool is constructed for installing and removing plumbing parts such as tub and sink drains that are engaged together by conventional right-hand threads, one within another. The tool can also be constructed to remove or install left-hand parts. The plumbing extraction and installation tool has an elongated core member with a stud at one end, a cylindrical intermediate section threaded with right-hand threads, and an outwardly flared frustoconical section at the end opposite the stud. A barrel member is internally threaded with right-hand threads at one end and a radial channel is defined in its inwardly facing wall. This channel is bounded by a radially inwardly directed annular lip at its lower extremity. A plurality of wedge members have hooks or tangs at their upper proximal ends that are captured between the barrel member and the core member.

Abstract: An extractor for removing a broken bolt stud having a pre-drilled bore from a threaded bore including a cylindrical body having a drive head on one end and expander on the opposite end. A collet is movably attached to the cylindrical body by threads permitting lateral movement of the expander against the gripping means causing them to expand and engage the pre-drilled bore. Rotation of the expander permits removal of the broken bolt stud due to the friction between the extractor and the stud.

Abstract: An internal pipe gripping device is provided which consists of a mechanism at one end for grasping an inner surface of a pipe and a structure at an opposite end for coupling to a pipe turning machine, so that the pipe can be rotated to be cut, polished, threaded and the like.

Abstract: To service an engine, it is frequently determined that a cylinder liner and piston must be replaced. Removal is difficult and time consuming if the piston is first removed through the liner and the liner is then grasped from below and pulled from the block. A method includes inserting a tool into a bore of the liner and expanding the tool into a frictional fit against the liner. A force is applied on the tool to forcibly move the liner. The piston and associated rings and rod are held in place in the liner by a partial vacuum for removal with the liner as a complete unit.

Abstract: A stud drive tool for threading and unthreading a stud in a head of a vessel, such as a reactor, including a base plate adapted to rest on a flange on the head of vessel. The tool includes means for inserting the stud into a hole in the vessel and to thread and unthread the stud therein.The base plate effectively absorbs any counter-torque produced by the turning of the stud while it is being driven because handles, which serve as reaction rods and guides, are rotatable and rest against the outside of the flange.The tool for threading and unthreading the stud means includes a moveable jaw clamp insertable into a threaded hole in the top of the stud and moveable into a position to clasp the stud and pneumatic means in which the pressure is manually regulated to equalize the weight of the stud as it is being threaded into or unthreaded out of the vessel, and an air motor which turns the stud.

Abstract: An apparatus for setting screw type blind rivets including a power drill having a laterally offset drilling head, and an adapter therefor interchangeable with the normal drill bit, which adapter has a laterally elongated slot adapted for receiving the flatted mandrel of the rivet while setting the rivet.