# US 5,706,710 A · Reversible/adjustable spanner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,706,710 A - Document ID: US5706710A - Status: Granted - Kind: A - Application number: 08/678,562 - Filed: 1996-07-09 - Granted: 1998-01-13 - Earliest claimed: 1996-07-09 - Inventors: Cho Cheng Chiang - Web page: https://patentgrep.com/patent/US5706710A ## CPC - B25B 13/46: of the ratchet type, for providing a free return stroke of the handle - B25B 13/12: the jaws being slidable - B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING ## Abstract A reversible/adjustable spanner includes an elongate body having a handle and a fixed jaw, a release button mounted above the body, a movable jaw, and an adjusting member. A substantially U-shaped plate is connected to the release button to move therewith and allows the body to extend therethrough. The adjusting member is securely mounted between the body and the U-shaped member and has an upper side with a plurality of teeth for engaging with a plurality of teeth on a bottom side of the body. The movable jaw has a a first end pivotally connected to one of the U-shaped member and the first end of the adjusting member and a second operative end for holding an object to be tightened or loosened between the second operative end and the fixed jaw, wherein a longitudinal movement of the release button causes a change in a distance between the fixed jaw and the movable jaw. ## Claims ### Claim 1 A reversible/adjustable spanner comprising: an elongate body having a handle formed on a first end thereof and a fixed jaw formed on a second end thereof, the elongate body further including an upper side, a bottom side with a plurality of first teeth formed thereon, and two lateral sides; a release button mounted above the body; a substantially U-shaped plate having two side wall sections respectively located outside the lateral sides of the body and a mediate portion located below the bottom side of the body, thereby receiving the body therethrough, the side wall sections being securely connected to the release button to move therewith along a longitudinal direction of the body; an adjusting member having an upper side with a plurality of second teeth for engaging with the first teeth, a bottom side, a first end, and a second end, the adjusting member being securely mounted between the side wall sections of the U-shaped member to move therewith along a longitudinal direction of the body; a movable jaw having a bottom side, a first end pivotally connected to one of the U-shaped member and the first end of the adjusting member, and a second operative end for holding an object to be tightened or loosened between the second operative end and the fixed jaw, wherein a longitudinal movement of the release button causes a change in a distance between the fixed jaw and the movable jaw; and a biasing means mounted between the mediate section of the U-shaped member and the adjusting member and having a first end attached to the bottom side of the adjusting member and a second end attached to the bottom side of the movable jaw, thereby biasing the movable jaw and the adjusting member upward. ### Claim 2 (depends on 1) The reversible/adjustable spanner as claimed in claim 1, wherein the release button further includes an elastic returning means mounted therein, wherein depression of the release button causes compression of the returning means and causes downward movements of the U-shaped member and the adjusting member to cause disengagement of the second teeth of the adjusting member from the first teeth of the body, thereby allowing relative movement of the movable jaw with respect to the fixed jaw along the longitudinal direction of the body, and wherein release of the release button causes upward movements of the U-shaped member and the adjusting member to cause reengagement of the second teeth of the adjusting member with the first teeth of the body under the action of elasticity of the returning means. ### Claim 3 (depends on 2) The reversible/adjustable spanner as claimed in claim 2, wherein the returning means includes two U-shaped ends. ### Claim 4 (depends on 2) The reversible/adjustable spanner as claimed in claim 2, wherein the returning means includes two wings respectively projecting outwardly from two lateral sides thereof, the release button includes two slots respectively defined in two lateral sides thereof and through which the wings respectively extend, and each of the side wall sections of the U-shaped member includes a second slot defined in an upper end thereof and through which an associated said wing extends. ### Claim 5 (depends on 1) The reversible/adjustable spanner as claimed in claim 1, wherein the first end of the adjusting member includes an arcuate concave, and the first end of the movable jaw is cylindrical so as to be received in the second arcuate concave such that the movable jaw is pivotal relative to the first end of the adjusting member about an axis of the cylindrical first end. ### Claim 6 (depends on 5) The reversible/adjustable spanner as claimed in claim 5, wherein the cylindrical first end of the movable jaw includes two knobs at two sides thereof, and each of the side wall sections includes an opening defined therein for pivotally receiving the associated knob. ### Claim 7 (depends on 5) The reversible/adjustable spanner as claimed in claim 5, wherein the bottom side of the adjusting member includes a notch defined therein for receiving the first end of the biasing means, and the second end of the biasing means is attached to the bottom side of the movable jaw and adjacent to the first end of the movable jaw. ### Claim 8 (depends on 1) The reversible/adjustable spanner as claimed in claim 1, wherein the adjusting member includes a protrusion formed on each of two lateral sides thereof, and each of the side wall sections of the U-shaped member includes an opening for fittingly receiving the associated protrusion on the adjusting member.