Abstract: A double-reversible ratchet wrench, which includes a body having a receiving chamber at one end, a ratchet wheel mounted within the receiving chamber, a stop block with two toothed portions mounted within the receiving chamber and meshed with the ratchet wheel to limit the direction of rotation of the ratchet wheel, a retainer ring mounted around the ratchet wheel inside the receiving chamber to hold the stop block in place, and an adjustment member mounted in the receiving chamber and turned to shift the stop block between two positions to control the reversing direction of the ratchet wheel.

Abstract: An adjustment wrench includes a movable pawl device mounted in an oval head of a wrench body thereof, and an adjustment nut rotated to move the pawl device in and out of a work hole in the oval head so as to hold down or release the workpiece to be turned with the wrench, wherein the oval head of the wrench body has alternatively arranged flat wall portions and teeth within the work hole, the pawl device has a V-shaped chucking head with a V-shaped chuck face for acting with the flat wall portions and teeth on the inside of the oval head of the wrench body to hold down the workpiece to be turned, the V-shaped chucking head having both ends slidably supported on two opposite side walls of the oval head of the wrench body by spring-supported steel balls.

Abstract: An open end wrench having a mouth defined between two jaws and a nest thereof, and a flat raised portion and a longitudinal series of teeth respectively raised from the two jaws inside the mouth. The longitudinal series of teeth including seven teeth, the center of the raised portion is aligned with the center of the mouth and the middle tooth of the longitudinal series of teeth. The line between the front end of the raised portion and the second tooth of the longitudinal series of teeth is parallel to the line between the rear end of the raised portion and the second to last tooth of the longitudinal series of teeth. The longitudinal length of the longitudinal series of teeth being 0.56 of the width of the mouth, and the distance from the front end of the longitudinal series of teeth to the nest being 0.89 of the width of the mouth.

Abstract: A quick-release socket adapter includes a hollow elongated casing having a front end for holding a socket and a rear end for coupling to a ratchet socket wrench, a spring, a stop rod inserted into the casing and forced by the spring to push a steel ball partially out of a transverse hole on the front end of the casing to lock the socket being mounted on the front end of the casing, and a release control rod inserted through a transverse through hole on the casing and moved to lock/unlock the stop rod, the release control rod having a smoothly curved peripheral notch on the middle which receives a rounded head of the stop rod, enabling the steel ball to be forced out of the transverse bole on the front end of the casing into engagement with the socket being mounted on the front end of the casing.

Abstract: A quick-release socket adapter includes a hollow elongated casing having a hollow polygonal coupling rod at one end for holding a socket, a hollow ratchet socket wrench coupling portion at an opposite end for coupling to a ratchet socket wrench, a spring, a stop rod inserted into the casing and forced by the spring to push a steel ball partially out of a radial locating hole on the polygonal coupling rod of the casing to lock the socket being mounted on the polygonal coupling rod of the casing, and a release control rod inserted through a transverse through hole on the ratchet socket wrench coupling portion of the casing and moved to lock/unlock the stop rod, the release control rod having a flank curved outwards on the middle ,the flank being engaged with a recessed top wall of a head at one end of the stop rod when the release control rod is moved to a first position in the transverse through hole on the ratchet socket wrench coupling portion of the casing, enabling the steel ball to be forced out of the ra

Abstract: An open end wrench having a mouth defined between two jaws and a nest thereof, a flat raised portion and a longitudinal series of teeth respectively raised from the two jaws inside the mouth. The longitudinal series of teeth including five teeth. The length of the flat raised portion being equal to the distance between the mid point of the first tooth of the longitudinal series of teeth and the midpoint of the last tooth thereof. The total length of the longitudinal series of teeth being equal to 0.67 of the width of the mouth. The distance from the remote end of the longitudinal series of teeth to the nest being 0.91 of the width of the mouth, and the first tooth of the longitudinal series of teeth and the second tooth thereof having a respective smoothly curved peak for grasping normal square head bolts and square nuts and normal hexagon head bolts and hexagon nuts.

Abstract: A ratchet wheel mounting arrangement in which a toothed arch block is mounted in a smoothly arched notch disposed inside a box end of a ratchet wrench. A smoothly arched notch extends axially to the topmost edge of the box end. The toothed arch block has one end disposed in contact with the arched notch. The other end of the arch block is supported on a spring in a blind hole in the arched notch. A toothed front side forced by the spring force into engagement with the ratchet wheel in the box end. The height of teeth of the toothed arch block is approximately equal to the height of teeth on the ratchet wheel.

Abstract: An adjustable golf club handle mounting arrangement includes a threaded adjustment rod member having a split coupling tube at one end, a shaft having a bottom end fastened to a club head by a screw joint and a top end inserted into the split coupling tube of the adjustment rod member, an internally threaded grip threaded onto the threaded adjustment rod member, and a tapered holding down socket sleeved onto the split coupling tube of the adjustment rod member to hold down the split coupling tube of adjustment rod member on the top end of the shaft, causing the split coupling tube of the adjustment rod member and the top end of the shaft together to be firmly secured together.

Abstract: A multipurpose tool having two pivoted cutter blades turned with two handles to act agaisnt each other, wherein a ratchet block is turned about a pivot at a front end of one handle and fixedly fastened to one end of one cutter blade, a stop block is pivotably mounted in one handle and turned by a rotary cap through a link between a first position where the cutter blades are allowed to be opened by moving the handles, a second position where the cutter blades are allowed to be closed by moving the handles, and a third position where the cutter blades are remained immovable when the handles are moved relative to each other.

Abstract: A box end of a box end wrench having a substantially .OMEGA.-shaped constraint spring rod mounted therein for stopping the workpiece in the box end, enabling the workpiece to be positively turned with the box end wrench, the constraint spring rod having two opposite ends respectively inserted into two opposite radial through holes on the peripheral wall of the box end, and an arched middle section closely attached to the inside wall of the box end for stopping the workpiece in the box end.

Abstract: A shock-absorbing racket handle having a plurality of grooves and solid blocks alternatively arranged along the length of the body thereof, and a plurality of longitudinal ribs respectively disposed in the grooves and connected between each two adjacent solid blocks in a staggered manner.

Abstract: A tool holder having a handle at one end of a flat base thereof for carrying by hand or hanging on the wall, parallel ribs of different lengths raised from the flat base and defining a plurality of tool receiving grooves, a plurality of retainer blocks respectively raised from the flat base adjacent to one end of each tool receiving groove and a plurality of springy retainer rods suspended in respective side notches at the ribs at two opposite sides of each tool receiving groove remote from the retainer blocks for holding down storage tools in the tool receiving groove.

Abstract: A socket for socket wrench having a magnetic bush mounted in a polygonal axial hole at one end thereof for attracting the workpiece to be turned, and a plurality of locating pins mounted in a plurality of radial holes thereof to stop the magnetic bush in place, the magnetic bush being moved axially in the polygonal axial hole between the locating pins and one end of the polygonal axial hole and having longitudinal slots which receive the locating pins.

Abstract: A wrench torque value callibrating apparatus having a flexible main rod coupled to an actuating member, and a torque meter with a probe disposed in contact with the flexible main rod for measuring the torque value of the wrench to be calibrated, wherein two flexible auxiliary rods are coupled to the actuating member in parallel to the flexible main rod for fine calibration adjustment.

Abstract: A golf club head having a plurality of pores spaced along scoring lines of a face in front of a recessed top chamber thereof, and a circular through hole at the center of a back wall thereof behind the recessed top chamber for guiding air out of the recessed top chamber when striking the ball.