Wrenches commonly known as pipe wrenches which include sidewall surface configurations within a channel extending through a housing component of the wrench are described. Also described are wrenches that include one or more shim components that can be positioned in the housing channel. In addition, methods for reducing failure or fracturing of the wrench due to application of high side or lateral loads are described.

Wrenches commonly known as pipe wrenches which include sidewall surface configurations within a channel extending through a housing component of the wrench are described. Also described are wrenches that include one or more shim components that can be positioned in the housing channel. In addition, methods for reducing failure or fracturing of the wrench due to application of high side or lateral loads are described.

A tool assembly for screwdriver with quick-release drill bits includes a bit main body, a sliding sleeve, a spring and a locating bolt. The bit main body has a shaft, and an outer periphery of a front end of the shaft has a plurality of axial cutting surfaces to form a connecting portion with a polygonal cross section. The sliding sleeve comprises a rear end and a front end, and a driving hole with a polygonal cross section axially penetrates through the sliding sleeve. An engaging groove formed at an inner periphery of the driving hole is located adjacent to the rear end of the sliding sleeve. The spring, the locating bolt and the engaging groove are configured to effectively shorten lengths of the connecting portion of the main body and the sliding sleeve thus lowering the manufacturing cost and increasing the competitive advantage in the market.

An adjustable spanner, including a stationary jaw and a movable jaw, suitable to be coupled to the stationary jaw in a plurality of different positions in order to engage objects of different sizes, and adjustable coupling means provided between the stationary jaw and the movable jaw. The adjustable coupling means include a substantially flat base, which is fixed to said stationary jaw and which includes a folded portion laterally embracing the movable jaw, in such a way that the stationary jaw and the movable jaw lay substantially on the same plane.

An adjustable spanner, including a stationary jaw and a movable jaw, suitable to be coupled to the stationary jaw in a plurality of different positions in order to engage objects of different sizes, and adjustable coupling means provided between the stationary jaw and the movable jaw. The adjustable coupling means include a substantially flat base, which is fixed to said stationary jaw and which includes a folded portion laterally embracing the movable jaw, in such a way that the stationary jaw and the movable jaw lay substantially on the same plane.

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.

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.

The present invention provides a wrench, and its structure includes a guide rod, a first pawl mounted on the guide rod, a sliding member sheathed on the guide rod, a second pawl mounted on the sliding member and matching with the first pawl, and a toothed block disposed on the sliding member and matching with the guide rod. The toothed block has a first position and a second position. When the toothed block is in the first position, the toothed block is slidable along the guide rod toward the first pawl, and is locked in the direction away from the first pawl. When the toothed block is in the second position, the toothed block is slidable along the guide rod toward or away from the first pawl.

The present invention provides a wrench, and its structure includes a guide rod, a first pawl mounted on the guide rod, a sliding member sheathed on the guide rod, a second pawl mounted on the sliding member and matching with the first pawl, and a toothed block disposed on the sliding member and matching with the guide rod. The toothed block has a first position and a second position. When the toothed block is in the first position, the toothed block is slidable along the guide rod toward the first pawl, and is locked in the direction away from the first pawl. When the toothed block is in the second position, the toothed block is slidable along the guide rod toward or away from the first pawl.

A wrench having a carriage slot of an adjustable size, suitable for accommodating and interacting with a range of nuts of different sizes. The size of the carriage slot is controlled by an adjustment mechanism that controls the position of a slider within the carriage slot. The position of the slider may be controlled by rotating a handle of the wrench.