Abstract: A tool includes a handle having a shank extended from one end for engaging with and for driving fasteners. A driving stem has an extension for engaging into the orifice of the shank and has an engaging hole for receiving and driving the fasteners. The shank and the driving stem are extended from one end of the handle such that the handle may apply a greater torque against the driving stem. A cover is pivotally coupled to the handle and has one or more wheel members for forming a roller skate shape. The shank has a clamping device for clamping the driving stem in place.

Abstract: A tool includes a handle having a bore for slidably receiving a stop and a link. The link has one end pivotally coupled to the stop for allowing the link to be rotated relative to the stop when the link is extended outward of the handle. A driving stem is pivotally coupled to the link for allowing the driving stem to be rotated relative to the link when the link is extended outward of the handle. A ratchet mechanism is disposed in the handle and is selectively engaged with the stop for controlling the driving direction of the driving stem.

Abstract: A jig for facilitating soldering of elongate pin to a circuit board having laminated first and second layers of metal in predetermined areas is provided and includes a template supported above the circuit board and at least one support frame supported above the template and the circuit board. The template includes legs descending therefrom which define a space therebetween for snugly receiving the circuit board therein. The template has pin receiving holes formed therethrough in respective alignment with the predetermined areas of the circuit board for the elongate pins to extend therethrough to contact the predetermined areas of the circuit board. The support frame includes pin position adjusting sections resiliently extending laterally therefrom and respectively having pin retaining holes formed therein in correspondence to the pin receiving holes of the template.

Abstract: A tool includes a driving stem having a rear portion received in the front portion of a handle. A ratchet mechanism is disposed in the handle and is engaged with the driving stem for controlling the driving direction of the driving stem. A hand grip is detachably secured to the rear portion of the handle for receiving a tape and a knife. A holder is slidably received in the handle for holding the knife. The tape and the knife and the driving stem are provided for wood working purposes.

Abstract: A cartridge includes two stems rotatably received in a housing and each having a gear extended inward of the housing. A gear transmission device is coupled between the gears of the stems for allowing one of the stems to be driven by the other stem with a greater speed and the other stem to be driven with a greater torque. The gear transmission device includes three or more gear members each having two gear portions of different sizes for engaging with the gears of the stems. A ratchet mechanism is disposed in the housing for controlling driving directions between the stems.

Abstract: A tool includes a handle having a front chamber for receiving a holder and a barrel and having a rear chamber for receiving a casing to hold one or more batteries. Two conductors are secured to the holder and coupled to one or more light bulbs. The barrel has one or more holes for receiving thae light bulbs and has a drive stem extended outward of the handle. One or more pairs of conductors are further coupled to the batteries for engaging with the conductors of the holder when the casing is engaged into the handle and coupled to a switch for being operated by the switch.

Abstract: A cartridge includes a housing having two orifices for rotatably receiving two stems respectively. The stems each has a gear extended inward of the housing. A gear transmission device is coupled between the gears of the stems for allowing one of the stems to be driven by the other stem with a greater speed, and for allowing the other stem to be driven by the one stem with a greater torque. The gear transmission device includes three gear members rotatably secured in the housing and each having two gear portions of different sizes for engaging with the gears of the stems.

Abstract: A ratchet screw driver includes a handle having a tube and having a number of ratchet teeth and a driving stem rotatably engaged in the tube. A follower is slidably engaged on the driving stem and includes a number of ratchet teeth for engaging with the ratchet teeth of the handle. A spring may bias the ratchet teeth of the follower to engage with the ratchet teeth of the handle for allowing the driving stem to be rotated in an active direction by the handle and to be rotated freely relative to the handle when the handle is rotated in the reverse direction.

Abstract: A hand tool which includes a handle holding a sleeve on the inside, a shaft moved in and out of the sleeve, a coupling member pivoted to the shaft and turned between a first position where the coupling member and the shaft are axially aligned, and a second position where the coupling member and the shaft are retained at right angles, and a control device coupled to the coupling member and shifted between a first position for forward/backward driving, a second position for forward driving only, and a third position for backward driving only.

Abstract: A ratchet screw driver includes a follower secured in a handle and having two ends each having a number of ratchet teeth. A barrel is engaged in the follower and has two non-circular ends for slidably engaging with two rings. The rings have ratchet teeth arranged opposite to each other for being biased to engage with that of the follower. The barrel may be rotated by the handle when the handle is rotated in an active direction, and the rings may be forced away from the follower against the biasing springs when the handle is rotated in a reverse direction.

Abstract: A tool display assembly includes a card having a dove-tailed flange formed to a lower edge thereof, at least one connecting member having a dove-tailed groove defined in a top thereof sa as to receive the dove-tailed flange therein and a lower end having four walls extending downwardly therefrom so as to form a rectangular portion to be received in a socket. An aperture is defined through a top of the lower end of the connecting member. A hook member has a hook formed on a top thereof and a stop bar extending transversely from a lower end thereof such that the hook extends through the socket and the rectangular portion and is engaged with the aperture.

Abstract: A length-adjustable screwdriver including a handle having a polygonal center hole, a polygonal tube slidably mounted in the polygonal center hole of the handle, a collar block controlled by a chuck to lock the polygonal tube at the desired location, a shaft mounted in the polygonal tube and having a magnet at its front end adapted for securing a tool bit at the front end of the polygonal tube by magnetic attraction, and a sleeve slidably sleeved onto the polygonal tube, the sleeve having a spring-supported ball forced into engagement with one of a longitudinal series of locating holes of the polygonal tube to secure the sleeve at the desired location and a polygonal center through hole adapted for holding a tool bit when the front end of the sleeve protrudes over the front end of the polygonal tube.

Abstract: A tool handle assembly includes a barrel having a bore and a cap having a hole. An element has a front tube for engaging through the bore of the barrel and has a rear protrusion for engaging in the hole of the cap. The tube includes an annular rib for engaging with and for rotatably supporting the barrel on the tube, and for allowing the barrel and the element and the cap to be assembled together without additional tool. The element includes a curved upper and bottom portions for allowing the user to grasp comfortably.

Abstract: A ratchet screw driver includes a driving stem having a gear rotatably engaged in the bore of a handle and having a free end end for engaging with a fastener to be driven. A ratchet mechanism is engaged in the handle and engaged with the gear of the driving stem for selectively driving the driving stem. A barrel is rotatably engaged on the driving stem and movable along the driving stem for engaging around the fastener and for preventing the fastener from being tilted and for preventing the fastener from hurting the hand of the user.

Abstract: A ratchet screw driver includes two rings secured in a handle and each having a number of ratchet teeth opposite to each other. A barrel is rotatably engaged in the rings. Two followers are slidably engaged on the barrel and rotated in concert with the barrel and each includes a number of ratchet teeth for engaging with that of the rings. A spring may bias the followers toward the rings. An extension is engaged with the barrel and may be rotated in an active direction by the handle. The followers are forced toward each other when the handle is rotated in a reverse direction.

Abstract: A ratchet tool includes a housing having a bole for rotatably receiving a rod and having one or more grooves for receiving supporting members and having a curved slot formed around the hole for receiving two rollers. The curved slot includes narrower ends or center portion for allowing the rollers to engage with the rod and the housing for allowing the housing to rotate the rod. The rod may be driven to rotate in one direction when only one of the rollers is engaged with the rod and the housing. The ratchet tool may be used for screw drivers or for wrenches.

Abstract: A display pack having a security device includes a hanging portion with a disk extending laterally therefrom which has at least two opposite walls extending therefrom, and a securing member. The hanging portion has a first hole defined therethrough and the disk has a second hole defined therethrough, each of the side walls has a protrusion extending therefrom so that the two side walls are securely inserted into a socket with the protrusion engaging with a recess defined in an inner periphery of the socket. The securing member has a flange extending radially from a lower end thereof and a hook member extending from an upper end thereof so that the securing member extends through the socket and the hook member is engaged with the second hole of the disk.

Abstract: A screw driver includes a handle having a casing for receiving batteries. A switch is electrically connected to the battery. A socket is engaged in the handle for receiving a lamp. A transparent block is engaged in the front end of the handle for engaging with a driving tool. A ferrule is rotatably engaged to the handle for engaging with and for retaining the transparent block in place. A reflector is engaged around the lamp and a spring may bias may bias the reflector away from the socket for adjusting the light beam of the lamp.