Pivoting jaw pipe wrench

A wrench for gripping any one of a plurality of cylindrical workpieces having different diameters comprising, a handle having longitudinally opposite ends, a fixed jaw on one of said ends, said fixed jaw comprising a plurality of teeth laterally therealong and facing longitudinally outwardly of said one end, said teeth including a plurality of discrete teeth, each discrete tooth being for a different one of a plurality of cylindrical workpieces having different diameters, a pivotal jaw member having first and second jaw faces at an angle to one another and each including a plurality of teeth facing inwardly of said one end, said pivotal jaw member being mounted on said one end for displacement of said first and second jaw surfaces about a jaw axis toward and away from said fixed jaw, a workpiece of given diameter to be gripped by the wrench being cradled between said first and second jaw faces and engaged by the one of said plurality of discrete teeth provided on said fixed jaw for the workpiece of given diameter, each of said discrete teeth having an apex and said pivotal jaw member having a vertex between said first and second jaw faces and, with the workpiece of given diameter gripped by the wrench, a line through said jaw axis and the apex of the one discrete tooth for the workpiece of given diameter and a line through said vertex and said apex of the one discrete tooth intersecting to provide a camming angle therebetween of from 90° to 150°, and the discrete teeth corresponding to a camming angle of from 90° to 130° having an included angle of 55°, a relief angle of 25° and a rake angle of 10° relative to a line through the apex of each corresponding discrete tooth and the center of the workpiece of given diameter for the corresponding tooth.

A wrench for gripping any one of a plurality of cylindrical workpieces having different diameters comprising, a handle having longitudinally opposite ends, a fixed jaw on one of said ends, said fixed jaw comprising a plurality of teeth laterally therealong and facing longitudinally outwardly of said one end, said teeth including a plurality of discrete teeth, each discrete tooth being for a different one of a plurality of cylindrical workpieces having different diameters, a pivotal jaw member having first and second jaw faces at an angle to one another and each including a plurality of teeth facing inwardly of said one end, said pivotal jaw member being mounted on said one end for displacement of said first and second jaw surfaces about a jaw axis toward and away from said fixed jaw, a workpiece of given diameter to be gripped by the wrench being cradled between said first and second jaw faces and engaged by the one of said plurality of discrete teeth provided on said fixed jaw for the workpiece of given diameter, each of said discrete teeth having an apex and said pivotal jaw member having a vertex between said first and second jaw faces and, with the workpiece of given diameter gripped by the wrench, a line through said jaw axis and the apex of the one discrete tooth for the workpiece of given diameter and a line through said vertex and said apex of the one discrete tooth intersecting to provide a camming angle therebetween of from 90° to 150° and the discrete teeth corresponding to a camming angle of 131° to 150° having an included angle of 90°, a relief angle of 40° and a rake angle of 40° relative to a line through the apex of each corresponding discrete tooth and the center of the workpieces of given diameter for the corresponding tooth.

A wrench for gripping any one of a plurality of cylindrical workpieces having different diameters comprising, a handle having longitudinally opposite ends, a fixed jaw on one of said ends, said fixed jaw comprising a plurality of teeth laterally therealong and facing longitudinally outwardly of said one end, said teeth including a plurality of discrete teeth, each discrete tooth being for a different one of a plurality of cylindrical workpieces having different diameters, a pivotal jaw member having first and second jaw faces at an angle to one another and each including a plurality of teeth facing inwardly of said one end, said pivotal jaw member being mounted on said one end for displacement of said first and second jaw surfaces about a jaw axis toward and away from said fixed jaw, a workpiece of given diameter to be gripped by the wrench being cradled between said first and second jaw faces and engaged by the one of said plurality of discrete teeth provided on said fixed jaw for the workpiece of given diameter, each of said discrete teeth having an apex and said pivotal jaw member having a vertex between said first and second jaw faces and, with the workpiece of given diameter gripped by the wrench, a line through said jaw axis and the apex of the one discrete tooth for the workpiece of given diameter and a line through said vertex and said apex of the one discrete tooth intersecting to provide a camming angle therebetween of from 90° to 150°, and said plurality of teeth laterally along said fixed jaw including teeth laterally between adjacent ones of said discrete teeth.

A wrench for gripping any one of a plurality of cylindrical workpieces having different diameters comprising, a handle having longitudinally opposite ends, a fixed jaw on one of said ends, said fixed jaw comprising a plurality of teeth laterally therealong and facing longitudinally outwardly of said one end, said teeth including a plurality of discrete teeth, each discrete tooth being for a different one of a plurality of cylindrical workpieces having different diameters, a pivotal jaw member having first and second jaw faces at an angle to one another and each including a plurality of teeth facing inwardly of said one end, said pivotal jaw member being mounted on said one end for displacement of said first and second jaw surfaces about a jaw axis toward and away from said fixed jaw, a workpiece of given diameter to be gripped by the wrench being cradled between said first and second jaw faces and engaged by the one of said plurality of discrete teeth provided on said fixed jaw for the workpiece of given diameter, each of said discrete teeth having an apex and said pivotal jaw member having a vertex between said first and second jaw faces and, with the workpiece of given diameter gripped by the wrench, a line through said jaw axis and the apex of the one discrete tooth for the workpiece of given diameter and a line through said vertex and said apex of the one discrete tooth intersecting to provide a camming angle therebetween of from 90° to 150°, and the discrete teeth corresponding to a camming angle of from 90° to 130° having an included angle of 55°, a relief angle of 25° and rake angle of 10° relative to a line through the apex of each corresponding discrete tooth and the center of the workpiece of given diameter for the corresponding tooth.

A wrench for gripping any one of a plurality of cylindrical workpieces having different diameters comprising, a handle having longitudinally opposite ends, a fixed jaw on one of said ends, said fixed jaw comprising a plurality of teeth laterally therealong and facing longitudinally outwardly of said one end, said teeth including a plurality of discrete teeth, each discrete tooth being for a different one of a plurality of cylindrical workpieces having different diameters, a pivotal jaw member having first and second jaw faces at an angle to one another and each including a plurality of teeth facing inwardly of said one end, said pivotal jaw member being mounted on said one end for displacement of said first and second jaw surfaces about a jaw axis toward and away from said fixed jaw, a workpiece of given diameter to be gripped by the wrench being cradled between said first and second jaw faces and engaged by the one of said plurality of discrete teeth provided on said fixed jaw for the workpiece of given diameter, the angle between said first and second jaw faces being between 90° and 130°, each of said discrete teeth having an apex and said pivotal jaw member having a vertex between said first and second jaw faces and, with the workpiece of given diameter gripped by the wrench, a line through said jaw axis and the apex of the one discrete tooth for the workpiece of given diameter and a line through said vertex and said apex of the one discrete tooth intersecting to provide a camming angle therebetween of from 90° to 150°, the discrete teeth corresponding to a camming angle of 131° to 150° having an included angle of 90°, a relief angle of 40° and a rake angle of −40° relative to a line through the apex of each corresponding discrete tooth and the center of the workpiece of given diameter for the corresponding tooth.