Patent ID: 6446530
Filing Date: 2002-09-10
Classification: B25B

Abstract:
A ratchet wrench comprising:a main body provided at one end with a disposing portion having a receiving cell; a wrenching member provided with a toothed portion and rotatable in said disposing portion of said main body; an arresting member provided with a toothed portion and disposed in said receiving cell of said main body such that said toothed portion of said arresting member is engageable with said toothed portion of said wrenching member; and a first resilient member urging at a first end thereof said arresting member and at a second end thereof said main body for providing said arresting member with a spring force enabling said ratchet wrench to rotate around the wrenching member in a first direction when engaged to a fastened nut or bolt; wherein said arresting member is further urged by a first end of a second resilient member, with a second end of said second resilient member urging said main body, said second resilient member serving to provide said arresting member with a spring force to enhance the engagement of said toothed portion of said arresting member with said toothed portion of said wrenching member so that said wrenching member when engaged to a fastened nut or bolt rotates with said ratchet wrench in a second direction opposite to the first direction; wherein expansion directions of the first resilient member and the second resilient member form a predetermined angle which respectively enable the rotation of the ratchet wrench in the first direction around the wrenching member and the second direction with the wrenching member, and wherein the expansion direction of the first resilient member substantially parallels then a tangential direction of the wrenching member, and the expansion direction of the second resilient member and the said tangential direction of the wrenching member are substantially normal.