Patent ID: 6722234
Filing Date: 2004-04-20
Classification: B25B

Abstract:
A wrench comprising:a handle comprising a first lateral side and a second lateral side opposite to the first lateral side; a head extended from the handle, a web being defined between the handle and the head, the head including a compartment, the web including a transverse hole having an intermediate portion communicated with the compartment, the transverse hole of the web extending from the first lateral side and between the first lateral side and the second lateral side of the handle, a cavity being defined in the web and communicated with the transverse hole of the web; a drive member rotatably mounted in the compartment of the head and including a plurality of teeth on an outer periphery thereof; a switch member mounted in the cavity and rotatable relative to the handle between two positions corresponding to two opposite ratcheting directions of the handle; and a pawl mounted in the transverse hole and slideable along a lengthwise direction of the transverse hole, the pawl including a first lateral side facing the compartment and a second lateral side facing away from the compartment, the first lateral side of the pawl including a first toothed portion and a second toothed portion that are selectively engaged with the teeth of the drive member according to one of the positions of the switch member relative to the handle, a groove being defined in the second lateral side of the pawl and including a first corner and a second corner; the handle including an upper side, the cavity including a vertical portion extending to the upper side of the handle, the switch member including a column rotatably received in the vertical portion of the cavity, the column having a transverse hole that faces the groove of the pawl; a coil spring mounted in the transverse hole of the column and having an enlarged portion abutting against an outer periphery of the column and surrounding the transverse hole of the column; and a pin having a first end received in the coil spring and a second end received in the groove of the pawl, the second end of the pin being biased by the coil spring to be selectively, securely engaged in one of the first corner and the second corner of the groove of the pawl that corresponds to said one of the positions of the switch member relative to the handle.