Patent ID: 8833132
Filing Date: 2014-09-16
Classification: B21D,Y10T

Abstract:
1. A pipe expanding tool comprising: first and second levers rotatably connected to each other through a rotary shaft; a pair of grips disposed on ends of the first and second levers; a pair of jaws disposed on other ends of the first and second levers; a pair of mandrels disposed on the pair of jaws, wherein the mandrels are capable of being inserted into an open end of a tube to be expanded; a coil spring disposed between the first and the second levers; and an adjuster disposed on at least one of the first and second levers for adjusting an angle of rotation of the first and second levers, the adjuster including: an adjustment screw disposed on a side surface of at least one of the first and second levers; and a stopper which disposed on a side surface of another of the first and second levers, wherein the coil spring is wound over an outer circumference of a shaft portion of the adjustment screw and a shaft portion of the stopper, and wherein rotation of the first and second levers is restricted by abutment of the adjustment screw against the stopper.