Patent ID: 9440337
Filing Date: 2016-09-13
CPC Classification: B25B

Claim Text:
1. A pipe wrench comprising: a body having a first recess defined in a top thereof, the body having an open end defined in a first end thereof, and a closed end formed at a second end thereof, a first contact portion located at the closed end, the body having two sidewalls and a first contact face connected between the two sidewalls, the first recess defined between the two sidewalls and the first contact face, a first aperture defined through each of the two sidewalls and located close to the open end, a threaded hole defined through the first contact portion; a first jaw being an L-shaped jaw and having a first end fixed to the body, a portion of the first jaw located in the first recess, a second end of the first jaw connected with a first connection portion; a second jaw having a second connection portion at a first end thereof, a first pivotal portion formed on a second end of the second jaw, a second contact face being defined at an underside of the second jaw, the second jaw slidably received in the first recess and located beneath the first jaw, the second contact face being in contact with the first contact face, the second jaw having a second recess defined in a top thereof, a second aperture defined through each of two sidewalls of the second recess, the second apertures communicating with the second recess; at least one clamp members connected to the first connection portion or the second connection portion; a first pin extending through the second apertures of the second jaw; a second pin extending through the first apertures of the body; a resilient member located in the second recess and connected between the first pin of the second jaw and the second pin of the body so that the second jaw is moved linearly in the first recess; a first link having a second pivotal portion and a second contact portion on two ends thereof, a third pivotal portion formed at a mediate portion of the first link, the second pivotal portion being pivotally connected to the first pivotal portion, the second contact portion contacting the first contact portion; a second link slidably located in the first recess, a fourth pivotal portion and an end face respectively formed on two ends of the second link, the fourth pivotal portion being pivotably connected to the third pivotal portion, a protrusion extending from a lower edge of the end face and contacting the first contact face, and an adjustment member threadedly connected to the threaded hole and having a head and a threaded shank extending from the head, the threaded shank having a distal end which contacts the end face of the second link, the protrusion being restricted by the distal end of the adjustment member, the end face of the second link contacting the first contact face, the head protruding from the body.