Patent ID: 6612205
Filing Date: 2003-09-02
Classification: B25B

Abstract:
A ratchet for rotating a threaded member, which comprises:an elongated member having a first end forming a handle and a second end, said second end including an open receiving surface therein; an insert having a generally cylindrical outer bearing surface disposed within said open receiving surface and of a size smaller than said open receiving surface, wherein a portion of said open receiving surface includes a partial cylindrical bearing surface against which said insert rotates, said insert configured for engaging the threaded member to enable rotation thereof; a movable stop operably disposed within another bearing surface portion of said open receiving surface adjacent said insert, said stop including two members movably joined at one end by an arm pin and said members each having another end wherein each end is characterized to have a hemi-cylindrical shape such that when said insert is caused to rotate in one direction relative to said partial cylindrical bearing surface said stop is frictionally drawn into lodging engagement with said insert and said another bearing surface portion and wherein one of said ends contacts said cylindrical outer bearing surface of said insert along a single line of contact perpendicular to a plane of rotation of said insert to preclude further rotation of said insert and fixably secure relative position between said insert and said bearing surface whereby said rotation of the threaded member is effected, and when said insert is caused to rotate in an opposite direction, said stop is driven into a dislodged position; and means for maintaining engagement and disengagement between said end and said insert which occurs along said line of contact in a manner to prevent binding therebetween.