Abstract: An open-end wrench includes a stationary jaw including an inclined hole, a through hole adjacent to a first end of an interior surface and communicating with the inclined hole, and a forward hook; a handle pivotably secured to a rear end of the stationary jaw; and a moveable jaw including a forward hook; a hollow cylinder extending from a rear portion to dispose in the inclined hole, the hollow cylinder having an elongated slot on a surface and communicating with an interior of the hollow cylinder, and internal threads at an open end of the hollow cylinder; a biasing member disposed in the hollow cylinder, a threaded fastener secured to the internal threads to urge against a first end of the biasing member; and a pin inserted through the through hole and the elongated slot to stop at a second end of the biasing member.

Abstract: A processes of manufacturing wrenches is provided with preparing a cylinder of raw material; cutting the cylinder of raw material into cylindrical first half-finished products; increasing volumes of two one ends of each first half-finished product 10-18% by compressing to form a second half-finished product having two spheres at two ends respectively; pressing each sphere to form top and bottom flats on the ends of the second half-finished product respectively; sintering the second half-finished product; placing the second half-finished product in a die; forging the second half-finished product to form a third half-finished product; and punching the third half-finished product to form a finished wrench having an open end and a box end.

Abstract: An open-end wrench includes a stationary jaw including an inclined hole, a through hole adjacent to a first end of an interior surface and communicating with the inclined hole, and a forward hook; a handle pivotably secured to a rear end of the stationary jaw; and a moveable jaw including a forward hook; a hollow cylinder extending from a rear portion to dispose in the inclined hole, the hollow cylinder having an elongated slot on a surface and communicating with an interior of the hollow cylinder, and internal threads at an open end of the hollow cylinder; a biasing member disposed in the hollow cylinder, a threaded fastener secured to the internal threads to urge against a first end of the biasing member; and a pin inserted through the through hole and the elongated slot to stop at a second end of the biasing member.

Abstract: A processes of manufacturing wrenches is provided with preparing a cylinder of raw material; cutting the cylinder of raw material into cylindrical first half-finished products; increasing volumes of two one ends of each first half-finished product 10-18% by compressing to form a second half-finished product having two spheres at two ends respectively; pressing each sphere to form top and bottom flats on the ends of the second half-finished product respectively; sintering the second half-finished product; placing the second half-finished product in a die; forging the second half-finished product to form a third half-finished product; and punching the third half-finished product to form a finished wrench having an open end and a box end.

Abstract: The disclosure provides a stator module and a magnetic field generating structure which includes a magnetizer and an electrically conducting pipe. The electrically conducting pipe is wound around the magnetizer and has a passage inside. The passage has an outlet and an inlet opposite to each other. The electrically conducting pipe has a current input portion and a current output portion.

Abstract: The disclosure provides a stator module and a magnetic field generating structure which includes a magnetizer and an electrically conducting pipe. The electrically conducting pipe is wound around the magnetizer and has a passage inside. The passage has an outlet and an inlet opposite to each other. The electrically conducting pipe has a current input portion and a current output portion.

Abstract: The disclosure provides a stator module and a magnetic field generated structure which includes a magnetizer and an electrically conducting pipe. The electrically conducting pipe is wound around the magnetizer and has a passage inside. The passage has an outlet and an inlet opposite to each other. The electrically conducting pipe has a current input portion and a current output portion.

Abstract: A foot-operated bicycle braking system comprises a fixation plate having a mounting arm and two retaining arms. The mounting arm is provided with a mounting hole for mounting the fixation plate on a support shaft of the braking system. The two retaining arms are provided with a retaining portion and a receiving hole. The bicycle rear fork is retained by the fixation plate such that the rear fork is retained securely between the mounting arm and the two retaining portions of the retaining arms, and that the rear fork is located by a locating bolt which is received in the receiving holes of the retaining arms.

Abstract: A tubular body has rectangular-shaped slot formed in the top portion thereof, and matched eccentric convex protrusions are formed on both sides of the body. A core is provided with a concave-shaped groove on its surface that is matched with the slot, when the core is inserted into the body. A cable is connected to the core. A rear cup is tightly fitted to the rear end of the body for securing the cable that is disposed externally through the hole. An insulation shell is tightly shielded on the outer rim of the rear cup and has an enclosed protrusion stopper. A locking device is provided which mates with the slot of the body. The locking device is furnished with ring-shaped side wings that ride on the body and touch the protrusions which serve as a force-receiving point. A coil spring is inserted from the rear end of the body and is located in between the locking wings and the rear cup. A slider is provided which can accommodate the locking wings of the device.