Patent ID: 6257097
Filing Date: 2001-07-10
Classification: B25B

Abstract:
A ratchet tool comprising:a ring-shaped head having a plate connected to one of two ends thereof and a first step surface connected to the other end of said head, said first step surface having a recessed space defined therein which is defined by a second step surface extending from said first step surface, a first hole and a second hole defined through said second step surface, a recess defined in an inner periphery of said head and communicating with said recessed space;a disk having an engaging member extending from a surface thereof and a flange extending from the other surface of said disk, said flange having a toothed inner periphery, said disk received in said head and located between said first step surface and said plate, said engaging member extending through said plate;a rotator having a toothed periphery and a protrusion extending from a surface of said rotator, said rotator received in said head and located between said second step surface and said plate, said protrusion rotatably engaged with said second hole in said second step surface, an axis ""P"" of said rotator located at a position which is eccentric to an axis ""P1"" of said disk, said toothed periphery engaged with said toothed inner periphery of said disk;a pawl receiving member received in said recess and a pawl member pivotally and movably connected to said pawl receiving member, said pawl member having a toothed surface engaged with said toothed periphery of said rotator, said pawl member having a positioning portion which faces said pawl receiving member, anda positioning means located between said pawl receiving member and said pawl member, said positioning means urging said pawl member to engage with said toothed periphery of said rotator.