Patent ID: 9498869
Filing Date: 2016-11-22
CPC Classification: B25B

Claim Text:
1. A socket wrench comprising: a wrench body; a ratchet wheel received in the wrench body, the ratchet wheel having a driving hole and a cylindrical flange extending on one side of the wrench body, the cylindrical flange of the ratchet wheel defining in an outer periphery thereof at least one aperture communicating with the driving hole, the cylindrical flange of the ratchet wheel having an annular groove defined in the outer periphery thereof; and a positioning ring mounted around the cylindrical flange of the ratchet wheel, a C-ring being positioned in the retaining groove to retain the positioning ring, the positioning ring having a central bore and at least one protrusion radially protruded from an inner wall of the central bore of the positioning ring, the protrusion projected from a wall of the driving hole through the aperture of the ratchet wheel.