Abstract: An insertion type hand tool comprises a tool body having a handle and a connecting portion extended from the handle; the connecting portion having a combining groove; a driving portion having an engaging end corresponding to the connecting portion; at least one side of the engaging end being formed with an inclined side for resisting against the combining groove of the connecting portion so that the orientation of the driving portion is adjustable with respect to the connecting portion; one side of the engaging end near the driving portion having a flat side; the flat side being adjacent with an inclined side; and an elastic unit is installed in the engaging end of the driving portion so as to be positioned in a positioning hole of the connecting portion.

Abstract: A socket wrench is provided which performs the functions heretofore carried out by two separate wrenches. To this end, the present invention provides a wrench where each end thereof selectively acts (a) as a receiving end for a nut or other fastener to be rotated by the wrench and of a different size than that to be received by the other end of the wrench and, (b) as the receiving end of a driver member which is to rotate the wrench to turn the nut or other fastener surrounded by the other end of the wrench. Preferably, the same driver member is insertable into either end of the wrench.

Abstract: A swing head structure of a wrench with two kinds of torque output includes a head part and a handle pivotally coupled together by a shaft, the wrench can also be used as a ratchet wrench or can rotate the handle backwards and forwards to make the head part to rotate in one direction, the rotating direction can be changed, the swinging movement of the head part does not affect the rotation and transmission of the wrench and the handle, the swinging head part includes two kinds of torque output to the wrench.

Abstract: A pivotal driving tool includes a socket having a non-circular cavity formed by three or more planer side walls, and having an inner retaining ring. A mandrel includes a driving shank having a non-circular cross section for engaging into the socket, to allow the socket to be rotated by the mandrel. The mandrel includes a narrowed neck portion to allow the mandrel to be pivoted relative to the socket, and one or more flat surfaces to solidly anchor the driving shank to the socket. A magnetic member may be disposed in the mandrel, to act on and to pull the driving shank into the cavity of the socket. A barrel may be slidably engaged onto the socket, to engage onto and to be disengaged from the mandrel.

Abstract: An extension tool includes a shaft having an annular groove and an orifice and an aperture formed in a front portion, to receive a retaining ring and a ball and an insert. A stem is slidably engaged into the shaft and includes a number of depressions for selectively receiving the ball, and for adjustably securing the stem to the shaft. A control ferrule is engaged onto the shaft, and has a protrusion biased to force the ball to engage into either of the depressions of the stem. A spring-biased projection is attached to a rear portion of the stem, and has a detent movable to engage into the aperture of the shaft, to lock the stem to the shaft, and to prevent the stem from being disengaged from the shaft inadvertently.

Abstract: A flexible socket extension includes two connectors disposed in two ends of a flexible housing, and a number of torque transmitting elements received in the flexible housing and coupled between the connectors. One of the torque transmitting elements includes a neck and a tongue which has a width greater than that of the neck. The other torque transmitting element includes a lateral groove for receiving the tongue, and having two juts extended into the lateral groove, for engaging with the tongue and for rotatably retaining the torque transmitting elements together.

Abstract: Apparatus and methods for applying torque to a socket wrench are disclosed. The apparatus comprising a handle, a ratchet head, the handle and the ratchet head pivotally joined to one another, a ratchet mechanism having a first drive spline and a rotation control, the first drive spline extending substantially orthogonal to the longitudinal axis of the ratchet head, the first drive spline selectively rotatable with respect to the ratchet head, and the first drive spline configured to apply a first given torque to the socket wrench, and a second drive spline extending substantially parallel to the longitudinal axis of the ratchet head, the second drive spline fixedly secured to the ratchet head, and the second drive spline configured to apply a second given torque to the socket wrench.

Abstract: A universal joint to transmit force from a tool to a workpiece. A driver attachable to the tool has a spherical cavity. A plurality of inwardly facing protrusions are formed in the cavity. Each protrusion has a pair of conical sidewalls separated by an angled ramp. A driven socket has a sphere formed on one end. The sphere has a plurality of channels. The sphere is received in the spherical cavity in the driver and the protrusions in the cavity are received in the channels. The drive webs forming the channel engage the protrusions when the driver is angularly offset from the driven socket.

Abstract: A quick rotation wrench includes a driving portion, a wrench body, and an angle adjustment structure. The angle adjustment structure includes a control knob, two pawl members, two positioning members, and an elastic member. Thus, the included angle between the wrench body and the driving portion can be adjusted freely and arbitrarily. In addition, the included angle between the wrench body and the driving portion can be adjusted easily and conveniently. Further, the control knob is mounted on the wrench body, so that the user can use his one hand to press the control knob and operate the wrench body easily and conveniently, thereby facilitating the user operating the quick rotation wrench.

Abstract: A ball socket driver bit that includes a ball portion and a shank portion. The ball portion has a ball portion cross section; the ball portion cross section perpendicular to the bit axis is hexagonal. The shank portion has a cross section smaller than the ball portion, and ag first shank portion end and a second shank portion end. The first shank portion end is axially attached to the ball portion, the second shank portion end is adapted to axially enter a socket head screw. The ball portion is adapted to enter a socket such that when turning the socket the socket head screw can be turned when the socket axis is not axially aligned with the screw axis.

Abstract: A drive device for a spiral screwdriver includes a barrel having a first end longitudinally and co-axially secured in a handle of the spiral screwdriver, and a second end formed with a distal flat. A polygonal hole is longitudinally defined in the barrel and extends to the distal flat of the barrel. An axle is movably and partially received in the polygonal hole, and has a polygonal cross-section corresponding to that of the polygonal hole. A locking member extends through the barrel and the axle in the barrel to selectively hold the axle in place. A chuck is selectively universally mounted to a free end of the axle and has a distal flat formed to selectively abut the distal flat on the barrel.

Abstract: An accommodating head for a tool which has an actuating tip and is intended for turning fastening elements, the tool having a drive element and an output element, it being possible for a torque to be introduced into the drive element and the tool being arranged in a rotationally fixed and pivotably mounted manner in the output element. In torque transmission from the actuating tip to the fastening element, the distance between the pivot axis of the actuating tip of the tool and the fastening element is small enough for the line of action of a force running along a longitudinal center axis of the output element to intersect the fastening element even in each pivoting end position of the tool and the actuating tip thereof.

Abstract: A torque multiplier having an output socket which allows to pivotally join an output action bar having a ball head for applying a resultant torque in multiple positions, said torque multiplier comprising: a housing having a first and a second end, two torque multiplier reaction arms, a multiplier gear mechanism having a torque input and a torque output located inside said housing and a torque output socket linked to the mechanism torque output, wherein said torque output socket including means for pivotally joining a torque output member allowing the movement of said output member 360° around the output socket.

Abstract: A screwdriver includes a handle including a seat, a shank having a first end in universal joint with the seat and a second end engaged with a tool bit, and an elastic element for retaining the first end of the shank and the seat together such that the first end of the shank and the seat rotate together when the handle is turned. The first end of the shank is in the form of a ball. The seat includes a pinhole, the ball of the shank includes a pinhole, and a pin is extended through the pinhole of the seat and the pinhole of the shank. An inner periphery of the ball presses against an inner periphery of the seat.

Abstract: A socket wrench is provided which performs the functions heretofore carried out by two separate wrenches. To this end, the present invention provides a wrench where each end thereof selectively acts (a) as a receiving end for a nut or other fastener to be rotated by the wrench and of a different size than that to be received by the other end of the wrench and, (b) as the receiving end of a driver member which is to rotate the wrench to turn the nut or other fastener surrounded by the other end of the wrench. Preferably, the same driver member is insertable into either end of the wrench.

Abstract: A universal socket structure includes a socket body, a mobile body having a first end pivotally mounted on a first end of the socket body so that the mobile body can be rotated relative to the socket body through a determined angle, and a sleeve slidably mounted on the socket body. In such a manner, the sleeve is slidable between a first position where the sleeve has a first end rested on the first end of the socket body and a second end rested on the first end of the mobile body so that the first end of the mobile body is fixed to the first end of the socket body, and a second position where the second end of the sleeve is detached from the first end of the mobile body so that the mobile body can be rotated relative to the socket body.

Abstract: An operating tool includes a plurality of pivotally connected shanks which are turnable relative to one another.

Abstract: An improved universal joint device for socket wrenches. The improved device is constructed with non-slip spring retaining surfaces on the handle and socket portions of the device for receiving the ends of a coil spring which can maintain the universal joint in alignment during both tension and compression. The device is otherwise free of grooves or apertures for mounting the spring to the handle and socket portions.

Abstract: An articulated screwdriver has a handle and a shank secured on the handle. The shank has a ball-end formed at a free end thereof, and an outer thread formed on an outer periphery close to the free end. A joint sleeve has a joint formed at a first end thereof and an opening defined at a second end. The ball-end is pivotally mounted in the opening. A positioning sleeve screwed on the shank has an inner thread engaged with the outer thread. Whereby, when the positioning sleeve is moved forwards to enter the opening, the shank is unable to be pivoted about the joint sleeve and when the positioning sleeve is distant from the opening the joint sleeve is able to pivot relative to the shank.

Abstract: The present invention provides for a readily exchangeable flex tool for machining a workpiece. The flex tool includes a driver and an tool carrying body. The driver is coupled to the tool carrying body in a manner which allows the tool carrying body to have at least two degrees of freedom with respect to the driver. The tool carrying body includes an elongate pilot shaft, the elongate pilot shaft and tool carrying body having a longitudinal axis. The at least two rotational degrees of freedom allowing the longitudinal axis of the tool carrying body and elongate pilot shaft to be aligned with a longitudinal axis of a reference bore contained in the workpiece and slidably inserted therein.

Abstract: A univesal joint, block and pin type, in which a carefully designed and sized center section will limit angulation of the joint at any angle desired up to, but not including an angle which will cause lockup.

Abstract: An improved universal joint device for socket wrenches. The improved device is constructed with exposed friction bearing surface portions on the handle and socket portions of the device for receiving the ends of a coil spring which maintains the universal joint in alignment during both tension and compression. The friction bearing surface portions are preferably knurled teeth positioned on the periphery of the handle and socket sections. The device is otherwise free of grooves or apertures for mounting the spring to the handle and socket portions.