In a tool for mounting and dismounting a pipe clamp provided by the present creation, a first end portion and a movable second end portion are separately disposed on a base, and a connecting rod mechanism is used to convert circular motion into linear motion of the second end portion by force, so as to reduce the distance between the second end portion and the first end portion, thereby achieving an effect that the annular inner diameter of a pipe clamp is increased when the pipe clamp is held between the first end portion and the second end portion.

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.

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 span-adjustable wrench including: an elongate handle; a head connected to a distal end of the handle and having a guide slot and a through opening; a fixed jaw coupled to the head; a moveable jaw having a guide rail integral thereto; a span adjustment and keeping insert inserted into the through-opening; and a spring configured to press the span adjustment and keeping insert toward the guide slot.

A span-adjustable wrench including: an elongate handle; a head connected to a distal end of the handle and having a guide slot and a through opening; a fixed jaw coupled to the head; a moveable jaw having a guide rail integral thereto; a span adjustment and keeping insert inserted into the through-opening; and a spring configured to press the span adjustment and keeping insert toward the guide slot.

In a tool for mounting and dismounting a pipe clamp provided by the present creation, a first end portion and a movable second end portion are separately disposed on a base, and a connecting rod mechanism is used to convert circular motion into linear motion of the second end portion by force, so as to reduce the distance between the second end portion and the first end portion, thereby achieving an effect that the annular inner diameter of a pipe clamp is increased when the pipe clamp is held between the first end portion and the second end portion.

Systems, method, and apparatus for locking a movable component of a tool into an operationally static position. A locking mechanism embedded within an interior cavity of a tool is operationally connected to a squeeze handle via a linkage assembly. When the handle is squeezed, the linked assembly drives the locking mechanism toward the movable component. Corresponding gear racks on the locking element and movable element inhibit movement in both vectors, using a zero degree pressure angle to strongly inhibit movement in another factor, and using a non-zero degree pressure angle to less firmly inhibit movement in an opposing vector.

Systems, method, and apparatus for locking a movable component of a tool into an operationally static position. A locking mechanism embedded within an interior cavity of a tool is operationally connected to a squeeze handle via a linkage assembly. When the handle is squeezed, the linked assembly drives the locking mechanism toward the movable component. Corresponding gear racks on the locking element and movable element inhibit movement in both vectors, using a zero degree pressure angle to strongly inhibit movement in another factor, and using a non-zero degree pressure angle to less firmly inhibit movement in an opposing vector.