Abstract: A tool for use with a fastener, more particularly, a medical screwdriver tool arranged to interact with a fastener has a driver body with a driver shaft, the driver shaft being associated with a tip configured for interaction with a fastener. The tool has an actuator arranged for reciprocal movement with respect to a longitudinal axis of the driver shaft between a first position proximal the tip and a second position distal the tip. The tip has first and second portions. The tool is configured for moving the first and second portions from a closed condition to an open condition upon movement of the actuator from the second position to the first position.

Abstract: A device for driving a fastener has a shaft and a driving portion formed on an end of the shaft. The driving portion is provided with one of a slot and a channel for securely holding a force applying member formed from a resilient material. When a tip of the driving member is positioned within a tip receiving portion tip portion of the fastener, a surface of the force applying member which faces towards the head of the fastener will frictionally engage with the head portion of the fastener to prevent the driving portion from slipping from the fastener.

Abstract: A driver tool apparatus is provided for the secure gripping, driving insertion, and release of a broad range of connector and/or fixation elements such as screws or bolts. These driver devices can be utilized for a broad range of applications in many fields. The driver tool, in some embodiments, may include a driver shaft; one or more driver elements protruding from the driver shaft and having a base region proximate the driver shaft and a distal region away from the driver shaft, wherein each driver element includes one or more pins suitable for inserting into a socket having one or more inside walls; and one or more securing features on each driver element.

Abstract: A plug connector has a housing, a locking spring, and a catch spring. The locking spring is connected to the housing and has a locking position and an open position. The catch spring is connected to the housing, and has a compressed position when the locking spring is in the open position and a rest position only when the locking spring is in the open position.

Abstract: A bone fastener assembly instrument that can assemble a two-component bone fastener during surgery is provided. The bone fastener may be of a type that comprises a threaded bolt and nut for securing an implantable device to bone, such as a spinous process. A method for using the bone fastener assembly instrument is also provided.

Abstract: A filter turning mechanism is attached to an engine in proximity to a filter (such as an oil filter), and may be used to install or remove a filter by turning the filter. The filter turning mechanism contacts a filter, and rotates the filter when the filter turning mechanism is rotated with a tool. One implementation of the filter turning mechanism includes an inner drive gear and a filter drive mechanism. The inner drive gear normally spins freely within the filter drive mechanism, but when pushed into the filter drive mechanism with a suitable tool such as a ratchet extension, the inner drive gear engages the filter drive mechanism, thereby causing rotation of the inner drive gear to rotate the filter drive mechanism as well, which in turn rotates the filter.

Abstract: An apparatus for removing a socket fastener is described. The apparatus includes a base, a camshaft, a sleeve and a cartridge. The base includes a base top section and a base bottom section. The camshaft includes lobes that extend from a camshaft top surface to a camshaft bottom surface. The camshaft is fixedly coupled to the base. The cartridge includes a cartridge top surface, a cartridge lip and a plurality of jaws. Each jaw includes a jaw counterclockwise outer cam surface, a jaw counterclockwise inner cam surface, a jaw clockwise outer cam surface, and a jaw clockwise inner cam surface. The cartridge is fixedly coupled to the sleeve and the cartridge interfaces with the camshaft. Additionally, the jaw inner cam surface interfaces with the camshaft cam profiles. The jaws rotate and engage the socket fastener.

Abstract: An apparatus for removing a fastener having a cylindrical aperture is described. The apparatus includes a base, a camshaft, a sleeve and a cartridge. The camshaft includes lobes that extend from a camshaft top surface to a camshaft bottom surface. The cartridge includes a cartridge top surface, a cartridge lip and a plurality of jaws. Each jaw includes a jaw counterclockwise outer frictional surface, a jaw counterclockwise inner cam surface, a jaw clockwise outer frictional surface and a jaw clockwise inner cam surface. The cartridge is fixedly coupled to the sleeve and the cartridge interfaces with the camshaft. Additionally, the jaw inner cam surface interfaces with the camshaft cam profiles. The jaws rotate and engage the walls of the fastener cylindrical aperture.

Abstract: A screw driver for a screw having a drive socket having an axially extending shaft with a bifurcated tip, the tip having a cross-sectional profile for insertion into a cross-sectional profile of the screw socket. The shaft has a tapered section adjacent the bifurcated tip. A bushing is mounted on an outer surface of the shaft for axial movement therealong. The bushing has inwardly extending protrusions for engaging the tapered section on the shaft upon movement in the axial direction along the shaft in a direction away from the tip. This allows the selective capture or release of the screw by the shaft tip by axial movement of the bushing away from and towards the shaft distal tip.

Abstract: An automatically-configurable screwdriver assembly includes a shaft with a hollow interior portion, a proximal end, and a distal end. A first blade is fixedly coupled to the distal end of the shaft to prevent motion in a proximal direction and a plunger is at least partially located within the hollow interior portion of the shaft and slidable therein between an extended position and a retracted position. A compression member exerts force on the plunger in a distal direction and a second blade is mechanically coupled to the plunger so that, when the plunger is in the extended position, the first blade and second blade extend approximately equidistant from the distal end of the shaft and form a substantially perpendicular configuration with one another and when the plunger is in the retracted position, the first blade extends a greater distance from the distal end of the shaft than does the second blade.

Abstract: A positioning structure for a ratchet wrench contains a ratchet wrench including a driving head, a receiving cavity, a first groove, a second groove, and a hole. The receiving cavity has a driving member, and the driving member having a toothed portion. The first groove has two opposite retaining blocks each having a plurality of locking teeth so as to engage with the toothed portion and having an orifice and a receiving aperture, and between two receiving apertures is defined a first resilient element. The second groove has a directional control member mounted, and the directional control member has a limiting portion, a recessed portion, an actuation portion, and a shaft, wherein a second resilient element is fitted onto the shaft and is inserted into the hole of the second groove, and the actuation portion is inserted into two orifices of the two retaining blocks.

Abstract: A device for loosening and untying knots including a body having a first section and a second section having a plurality of channels, a pusher rod positioned slidably within the first section of the body, a shaft positioned slidably within the first and second sections of the body and being engaged with the rod, and a plurality of prongs, each including a base, a nose and a rail. The rails slidably fit into the channels of the body, and a head of the shaft is engaged with the bases of the prongs. The prongs move between a retracted position, in which the noses are juxtaposed with one another and inserted within a knot, and an expanded position, in which the noses are spaced apart from one another when the shaft is moved within the body, the noses loosen and untie the knot when the prongs are expanded.

Abstract: A driver for a brass cylindrical type nut for an electrical terminal includes a handle, a sleeve, and a rotation axle. The handle has an exterior wall and an interior wall, in which the interior wall has a first accommodating space, and the exterior wall has a plurality of notches formed thereon in communication with the first accommodating space. The sleeve disposed in the first accommodating space and coupled to the interior wall further has a second accommodating space and a coupling opening arranged at a front end of the sleeve. The rotation axle is disposed in the second accommodating space and has a thread mated with the brass cylindrical type nut at an end corresponding to the coupling opening, while a rotation nut arranged within the first accommodating space and corresponding to the pair of notches is connected to the rotation axle.

Abstract: A drain removal tool with a central opening aligned along a central tool axis, a holding section with a hex head for applying torque to the tool, and an engagement section including elongate sharp ridges or teeth extending in a helical pattern from an external surface of the engagement section from the tool for engagement with the drain to be removed. Each elongate sharp ridge has one flat face and a ramp face. Each flat face is aligned along a radius extending outwardly from the central tool axis. The ridges are spaced such that the distance between each flat face is approximately 6 degrees. Each helical ridge is a left hand helical serration on a 15 degree pitch with respect to the central axis of the central opening. The holding section includes a hex head configuration. The central opening in the holding section has a hex configuration.

Abstract: A screw driver for a screw having a drive socket having an axially extending shaft with a bifurcated tip, the tip having a cross-sectional profile for insertion into a cross-sectional profile of the screw socket. The shaft has a tapered section adjacent the bifurcated tip. A bushing is mounted on an outer surface of the shaft for axial movement therealong. The bushing has inwardly extending protrusions for engaging the tapered section on the shaft upon movement in the axial direction along the shaft in a direction away from the tip. This allows the selective capture or release of the screw by the shaft tip by axial movement of the bushing away from and towards the shaft distal tip.

Abstract: A method and apparatus for aligning objects may be present. A locating pin may be positioned relative to secondary holes in a plurality of objects. The locating pin may comprise a segment with a cross section having an elliptical shape, a surface, and an indicating feature associated with the segment. The locating pin may be inserted into the secondary hole, wherein a number of portions of the surface align the secondary holes.

Abstract: A method and apparatus for aligning a plurality of objects may be present. A locating pin may be positioned relative to secondary holes in a plurality of objects. The locating pin may comprise a segment with a cross section having a number of portions alternating between curved sections and angled sections and a surface. The locating pin may be inserted into the secondary holes. The number of portions of the surface corresponding to the angled sections may be configured to align the secondary holes in a desired direction to align the plurality of objects.

Abstract: A screw driver for a screw having a drive socket having an axially extending shaft with a bifurcated tip, the tip having a cross-sectional profile for insertion into a cross-sectional profile of the screw socket. The shaft has a tapered section adjacent the bifurcated tip. A bushing is mounted on an outer surface of the shaft for axial movement therealong. The bushing has inwardly extending protrusions for engaging the tapered section on the shaft upon movement in the axial direction along the shaft in a direction. away from the tip. This allows the selective capture or release of the screw by the shaft tip by axial movement of the bushing away from and towards the shaft distal tip.

Abstract: A device for separating opposed ceramic elements from a metal base member, the device including a rigid body shaped complementarily to an inside surface of the base member and receivable therein. Opposed wedge members are mounted are in the body wall. The body includes a threaded interior surface. A bolt is included for threaded engagement with the interior surface and has a conically-shaped end. Each wedge member is engageable with one of the ceramic elements, such that upon inserting of the body in the base member and threaded movement of the bolt inward to the body, the end of the bolt engages the wedge members to urge the wedge members outward through a body wall to engage the ceramic elements to urge the ceramic elements apart and to separate from the base member.

Abstract: A screw driver for a screw having a drive socket having an axially extending shaft with a bifurcated tip, the tip having a cross-sectional profile for insertion into a cross-sectional profile of the screw socket. The shaft has a tapered section adjacent the bifurcated tip. A bushing is mounted on an outer surface of the shaft for axial movement therealong. The bushing has inwardly extending protrusions for engaging the tapered section on the shaft upon movement in the axial direction along the shaft in a direction. away from the tip. This allows the selective capture or release of the screw by the shaft tip by axial movement of the bushing away from and towards the shaft distal tip.

Abstract: In a screwdriver for bone screws, having a handle and rotationally fixedly held thereon a shaft, the free end of which has a non-circular cross section and is insertable in a positively locked manner in a non-circular receiving opening in the head of a bone screw, at least one expander element being mounted so as to be displaceable in the longitudinal direction in the shaft and so as to slide, when displaced in the longitudinal direction, along a slide surface in the area of the free end of the shaft in such a way that it projects laterally over the contour of the shaft, in order to simplify the actuation of the at least one expander element, it is proposed that the at least one expander element be pretensioned by an elastic spring element in the direction towards the free end of the shaft and be retractable against the action of the spring element in the shaft until it no longer projects laterally over the contour of the shaft.

Abstract: In a first embodiment of the present invention a gripping fastener driver includes a primary shaft having a drive end and at least a portion of the shaft is hallow. A drive tip is held in place within the drive end of the primary shaft and a spring is mounted within the primary shaft pressing against the drive tip, whereby the drive tip is biased toward the drive end. A releasable fastener-locking mechanism is attached to the primary shaft and a tightening member movably mounted to the primary shaft. Therefore, tightening member is movable between a first position wherein the locking mechanism is open and a second position wherein the locking mechanism is moved into a closed position.

Abstract: A hexagonal spanner has two ends, one end being a long driving end and the other end being a short driving end; the long driving end having a threaded hole for receiving a threaded rod; and the threaded hole being formed near an end portion of the long driving end; two ends of the threaded rod can be engaged to a screw driver; the threaded rod can be driven to protrude from the threaded hole so as to enlarge the size of the long driving end and the long driving end can fit a size of the threaded groove of a screw unit. The threaded hole penetrates through the long driving end. A length of the threaded rod is equal to that of the threaded hole. The short driving end is formed with another threaded hole and another threaded rod is inserted into the threaded hole of the short driving end.

Abstract: Three congruent prongs (16A, 16B, 16C) mounted on a shaft tube (12), converges simultaneously when an operating sleeve (14) moves forward. This action, along with their notches and shape provides a firm grip for holding and starting nuts and bolts. These prongs, made out of 304 grade stailess steel bands, provide good spring-like flexibility and rigidity. The concave sides of the prongs mate with the outside surface of the shaft tube (12) every time the operating sleeve (14) is moved forward. These physical features provide consistent alignment of the prongs every time the tool is used. With rubber sealant (16D) coated on the inside surface of the prongs, the nut and bolt starter gives a firm grip to hold and start a wide variety of shapes and sizes of screws, nuts and bolts. Additional uses of this tool are done with the prop rod (20) supplementing the prongs.

Abstract: A slide stop device of a hexagonal spanner serves for preventing a rounded edged inner hexagonal screw to slide as the hexagonal spanner drives the inner hexagonal screw. The slide stop device comprises a spanner body; one end of the spanner body having a driving portion. The driving portion has at least one axial slot; a screw hole formed along an axial direction of driving portion; a through hole extending from an inner side of the screw hole and being at the same line with the screw hole; a screwing resisting element capable of being screwed into the screw hole; one end of the screwing resisting element having a driving hole so that an opening can be inserted into the cruciform hole to drive the screwing resisting element to rotate. In use, the screwing resisting element is inserted into the screw hole.

Abstract: A slide stop device of a hexagonal spanner serves for preventing a rounded edged inner hexagonal screw to slide as the hexagonal spanner drives the inner hexagonal screw. The slide stop device comprises a spanner body; one end of the spanner body having a driving portion; the driving portion having three axial slots; and a screw hole extending from the tapered hole; a resisting element formed by a screw unit, a tapered resisting unit having a shape corresponding to that of the tapered hole, and a spring. In assembly, the screw unit and the resisting unit are placed in the tapered hole; and the spring is placed between the tapered hole and the resisting unit. The screw unit is screw into the screw hole, while a head of the screw unit resists against the step portion and a part of the resisting element exposes from the tapered hole.

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 handle is provided for use with a bit or extensive rod. The handle includes a socket. The socket includes a thin section, a thick section, an annular face between the thin and thick sections, an axial cavity and a radial aperture communicated with the axial cavity in the thin section. A detent is put in the radial aperture. A chuck is put on the socket for control over the detent.

Abstract: Disclosed is a tool for both removing and tightening screw-on drains that is simple and easy to use, has a simple design and is easy to manufacture. The tool is capable of engaging an inner surface of a drain flange in a manner that is sufficient to transfer enough force to remove screw-on drain flanges and is capable of use with various designs and sizes of screw-on drain flanges. Different size cams and different lever arms used on the cams allow the tool to optimize the radial force to torque ratio for both removal and insertion of screw-on drain flanges. In addition, nubs are used at the bottom of the drain flange to engage arms that typically are used on drain flanges to further add to the resistance that can be provided between the tool and the drain flange and distribute forces in a dynamic, instantaneous and automatic fashion to optimize removal of the drain flange.

Abstract: The present invention relates to an improved split-tip screwdriver. The split-tip screwdriver of the present invention prevents the movable sleeve from detaching from the remainder of the screwdriver by incorporating a retention rim on both the sleeve and the handle. The split-tip screwdriver also provides an extended portion on the sleeve that covers the elongated members and insulates the elongated members when the sleeve is extended from the handle to minimize the possibility of a user inadvertently being shocked by electricity conducted through the elongated members.

Abstract: Disclosed is a coupler that grips the internal surface of a torque receptor such as a pipe or driveshaft to be turned. When torque is applied to the coupler, one or more gripping surfaces are forced apart by a cam mechanism. The gripping surfaces tightly engage the internal surface of the pipe in response to movement of an internal cam. Torque applied to the wrench causes the pipe to turn. Because the wrench grips the internal diameter of a torque receptor, it can be used without damaging the external surface of the torque receptor, and used in very confined spaces. The gripping surfaces distribute the gripping load evenly across the pipe, which minimizes any deformation of the pipe.

Abstract: Disclosed is a coupler that grips the internal surface of a torque receptor such as a pipe or driveshaft to be turned. When torque is applied to the coupler, one or more gripping surfaces are forced apart by a cam mechanism. The gripping surfaces tightly engage the internal surface of the pipe in response to movement of an internal cam. Torque applied to the wrench causes the pipe to turn. Because the wrench grips the internal diameter of a torque receptor, it can be used without damaging the external surface of the torque receptor, and used in very confined spaces. The gripping surfaces distribute the gripping load evenly across the pipe, which minimizes any deformation of the pipe. The pipe is engaged by the gripping surfaces beyond the threaded portion of the pipe, where the pipe has more structure, to prevent ovaling.

Abstract: A tool includes a tool bit and a handle for releasable engagement with the tool bit. The tool bit includes an insert formed thereon. The handle includes a socket formed thereon. The socket includes a cavity defined therein for receiving the insert and at least one hole communicated with the cavity. The at least one hole includes an internal end and an external end larger than the internal end. The at least one annular groove defined in the insert is aligned with the at least one hole when the insert is inserted in the socket. At least one ball is received in the at least one hole. A sleeve includes an internal face and at least one cam surface formed on the internal face thereof. The sleeve is rotationally mounted on the socket between a first position and a second position. In the first position, the at least one cam surface allows complete removal of the at least one ball from the cavity. In the second position, the at least one cam surface pushes the at least one ball into the cavity.

Abstract: Disclosed is a wrench that grips the internal surface of a pipe to be turned. When torque is applied to the wrench, one or more gripping surfaces are forced apart by a cam mechanism. The gripping surfaces tightly engage the internal surface of the pipe in response to movement of an internal cam. Torque applied to the wrench causes the pipe to turn. Because the wrench grips the internal diameter of a pipe, it can be used without damaging the external surface of the pipe, and used in very confined spaces. The gripping surfaces distribute the gripping load evenly across the pipe, which minimizes any deformation of the pipe.

Abstract: A notch-forming extraction tool for helically coiled wire inserts according to the invention includes a mandrel with a second end having a tooth adapted to form and be received by a notch of the insert. A first end opposite the second end is received in a bushing of a handle portion for connecting the mandrel to the handle. Left-hand rotation of the handle contracts the insert about the second end of the mandrel to facilitate removal of the insert.

Abstract: A frost proof sill cock extraction tool for removing a broken sill cock. The frost proof sill cock extraction tool includes a bar. The bar is elongate and has a distal end and a proximal end. A peripheral wall extends between and is integrally coupled to the distal and proximal ends. The bar is generally hollow and has a hole extending through the distal and proximal ends. An outer surface of the peripheral wall positioned adjacent to the distal end is knurled. The bar has a break therein located generally adjacent to the distal end such that a first portion and a second portion of the bar is defined. The first portion abuts the distal end. The break extends from the peripheral wall to a point generally adjacent to the distal end in an angular relationship to a longitudinal axis of the bar. An inside surface of the first portion is threaded. A rod is elongate and has a first end and a second end. The rod has a threaded outer surface.

Abstract: An apparatus for engaging a slotted pin comprising a cylindrical member defining a cylindrical axial pin bore and two tab slots spaced 180.degree. apart, the slots for a portion of their length connecting through the member to the bore, engaging tabs pivotally connected in the tab slots, means for biasing the tab members outwardly from the tab slots, and means for causing engagement of the tabs with the slots of a slotted pin inserted into the bore.

Abstract: The fastener-driving tool has an locking insert which expands or displaces to more securely lock the tool in the fastener. The tool has a distal end configured to engage a driving recess in a fastener, and has an annular recess adjacent the distal end, with a reduced cross-section at the annular recess, other than an axial circular cross-section. A locking insert having a generally similar cross-section to that of the distal end is positioned in the annular recess closely around the reduced cross-section. The locking insert may have a split portion which permits expansion of the locking insert when acted upon by the reduced cross-section as a result of rotation of the distal end relative to the locking insert, or may provide locking simply by displacement resulting from being acted upon by the reduced cross-section.

Abstract: The instrumentation comprises for each lumbar vertebra two pedicular screws having two screw threads, one of the screw threads corresponding to the region of penetration of the screw in the pedicle, two rods having asperities respectively associated with a pedicular screw and secured to the latter by connection elements provided with elements for clamping the rods. Each connection element is in one piece and the screw thread corresponding to the region of penetration of the screw in the pedicle terminates in an annular shoulder against which the connection element bears which is separated by a smooth part from the screw thread outside the region of penetration in the pedicle.

Abstract: A plunger for attachment to a drum reseal cap, the plunger having opposed ends with a handle alone end, resilient fingers at the other end and a sliding cylinder for forcing the resilient fingers in an outward direction to engage the reseal cap.

Abstract: An insertion tool for a helically coiled wire insert of the type used for tapped holes in parent material that is generally softer than a fastener being screwed into the tapped hole, whereby a mandrel having a threaded lead portion and a pivotal pawl inserted in a groove below the threaded portion so that the pawl engages a cut out portion formed in the insert in order that the insert may be screwed onto the tapped hole. The driving face of the pivotal pawl has a cavity formed therein to capture the lead coil of the insert and prevent its axial movement during installation.

Abstract: An oil filter removal tool for removing an oil filter contained within the oil pan of an internal combustion engine is disclosed. The tool has a pair of outwardly engaging jaws, a rotatable central socket drive element, means for connecting the outwardly engaging jaws to cooperatively engage the central socket drive element, and means for outwardly biasing the jaws. The outwardly engaging jaws each have a substantially semicircular outer wall which has means for engaging an oil pan filter cap. The outwardly engaging jaws each further have an inner wall which has a central polygonal surface and retaining means for retaining the central socket drive element within the jaws. The central socket drive element has an upper portion and a lower polygonal base which has a plurality of drive walls.

Abstract: A tamper-resistant terminator includes a connector body rotatably encapsulated within a shield. A port in the shield receives a terminal of a cable transmission system therethrough for rotational engagement with a threaded bore within the connector body. Another port in the shield provides access to a socket defined by a smooth continuous cylindrical body. The socket and the threaded bore extend in opposite directions along a longitudinal axis about which the shield is freely rotatable. A tool includes a tubular shaft having a knurled portion at the free end extends from a first handle section. A disc residing adjacent the end of the tubular shaft is carried by a shaft rotatably journaled with the tubular shaft and drivingly engaged with a second handle section.

Abstract: A wrench-adapter for rotating a plug of a casing for an in-the-pan type of oil filter. The wrench-adapter adapter has a tubular main housing that is telescopingly received in the plug with a portion of the main housing projecting outwardly of the plug. A plurality of pivotally mounted jaw-members are mounted in the outer circumferential surface of the main housing with each having a portion projecting into the hollow interior of the main housing, and a portion projecting away. An actuator-member causes partial rotation of the jaw-members relative to the main housing in both the clockwise and counterclockwise directions, in order to bring one of the sharpened corners of each the jaw-member into contact with the annular interior surface of the main housing of the plug. The actuator-member has a central hollow interior for receiving therein the head projecting from the recessed front surface of the plug.

Abstract: A theft-resistant fastener system includes a rotatable wrench adapted to engage a head portion of a fastener and to rotate that fastener and head portion about a fastener axis. The wrench and fastener jointly have at least three ball-and-socket joints distributed about the fastener axis. Each of these ball-and-socket joints has a ball in the wrench and a socket in the head portion of the fastener, with each socket being provided with a circular cross-section about a socket axis extending at an acute angle to the fastener axis. The wrench has a releasable actuator for pressing the balls into the sockets preparatory to and during rotation of the wrench about the fastener axis. The head portion of the fastener is prevented from clearing the balls, when the actuator presses these balls into the sockets, by providing that head portion at each socket with an overhang extending over part of the ball in that socket.

Abstract: A power driven screw driver self-gripping composite bit in the form of a pair of mirror image halved elements united at a common oblique interface providing a square end driver for reception in a screw head formed with a combined socket that accepts both a square end bit and a cross-point bit. Each halved element driver portion defines a trapezoidal cross section having major and minor parallel exterior side surfaces, a complete side surface extending at right angles to its major and minor surfaces, and a diagonal-like interface. The composite bit holder resiliently biases the halved elements interfaces into coextensive flush contact normally defining a square end driver.

Abstract: An instrument for inserting a bone graft, wherein the bone graft is of a substantially cylindrical configuration and is extremely threaded. The graft is clampingly held at one end of an elongated instrument which securely holds the graft and permits it to be threadably inserted into a previously prepared intervertebral bed. After the graft has been properly inserted into the bed, the instrument can be manually released from the graft.The instrument for inserting the graft includes an elongated handle, and a control rod extends coaxially through the handle and is rotatably and threadably coupled thereto. The control rod at the lower end thereof has a part which projects outwardly from the handle and releasably grippingly engages the implant.

Abstract: A screw-gripping screwdriver includes a handle, a shaft composed of two blade members, a sleeve which is disposed coaxially about the blade members, and a tip. The blade members have inclined surfaces which cooperate with the sleeve so that, during movement of the sleeve along the blade members, a camming action occurs so that a relatively large movement of the sleeve causes a relatively small movement of the blade tips. In a preferred embodiment, each blade tip is an L-shaped portion, which in a first position of the sleeve adjacent to the handle, cooperates with the other one of the L-shaped portions to form a generally cruciform shape suitable for use with a Phillips head screw. In a second position, the sleeve has cammed the blade members toward one another so that the L-shaped portions are in frictional engagement with the interior walls of a cruciform opening in a Phillips head screw. In another embodiment, the blade tips are generally rectangular members suitable for use with a slot head screw.

Abstract: A device is disclosed for the adjusting of wheels of a motor vehicle, particularly for the adjusting of a wheel camber. The wheels, via control arms and spring struts, are heald at the vehicle body, the wheel carrier, on the one side being flexibly connected to the pivotable control arm and, on the other side being adjustably connected with the lower end of the spring strut via two fastening screws. At least one of the fastening screws is developed as part of an adjusting element, in which case a head or a nut of the element is connectable with the eccentric sleeve of a manually operable adjusting tool that can be fitted on in a formlocking way and can be detached. The eccentric sleeve can be rotated around a central axis of the screw, between two opposite supports at a lower fastening clip of the spring strut, resulting in a transverse shifting of the screw that adjusts the wheel camber.

Abstract: A puller for spherical bushings comprises an inner puller body having a cylindrical outer surface so that it can be inserted into the bore of the bushing with a lip at one end for engaging behind the bushing. A wedge member actuated by an elongate bolt forces the lip outwardly into engagement. A screw threaded portion of the outer surface of the puller body carries a nut which can drive a sleeve shaped outer puller axially along the inner puller body to engage an outer member carrying the bushing. An installing tool is also provided including a cylindrical portion for insertion into the bore of a bushing and a shoulder at the end of that portion for engaging the end surface of the bushing so that hammer blows applied to one end of the tool force the bushing into place.