Patent ID: 6666112
Filing Date: 2003-12-23
Classification: B25B

Abstract:
A reversible ratchet type wrench comprising:a handle; a head extended from the handle and including a hole, the handle comprising a receptacle communicated with the hole, the receptacle comprising an inner wall that faces the hole of the head, the handle further comprising a cavity that communicates with the receptacle; a drive member rotatably mounted in the hole of the head, the drive member including a plurality of teeth formed on an outer periphery thereof; two pawls mounted in the receptacle in a spaced manner, with the two pawls being independent from each other and each including a first side with a plurality of teeth for releasably engaging with the teeth of the drive member and a second side abutting against the inner wall of the receptacle; a switch member including a turn-piece for manual operation, the switch member being rotatably mounted in the cavity of the handle and comprising an actuating portion for selectively moving one of the pawls to a position not engaging with the teeth of the drive member by rotation of the switch member in the cavity, the switch member further comprising two support portions for selectively supporting a portion of the other pawl that disengages from the inner wall of the receptacle while said one of the pawls is in the position not engaging with the teeth of the drive member, with the support portions being linear from an outer periphery to the actuating portion corresponding to and for abutting the second sides of the pawls, with the support portion selectively supporting the portion of the other pawl arranged parallel to and extending contiguously with the inner wall of the receptacle engaged by the second side of the other pawl thereby supporting the other pawl that engages with the teeth of the drive member; and means for biasing the teeth of the pawls to engage with the teeth of the drive member, respectively.