Patent ID: 7980321
Filing Date: 2011-07-19
Classification: B25B

Abstract:
1. An anvil for use with a tool, the anvil comprising: a drive body; a drive end of the anvil having a generally circular structure; a channel defined between the drive end and the drive body; a friction structure at least partially retained in the channel; at least a portion of the drive end proximate the friction structure defining flats; the drive body defining a polygonal shape having flattened sides, the flats on the drive end being oriented aligned with the flattened sides on the drive body with the flats positioned on outer circumferential portions of the generally circular drive end; intersecting edges of neighboring flattened sides of the polygonal drive body defining beveled edges between the neighboring flattened sides; the friction structure extends generally at least partially radially away from the anvil in correspondence with the flats for providing a degree of engagement between the anvil and a socket and wherein the friction structure only extends slightly outward along the flats; a transition cone positioned on the drive body generally distal the drive end and the polygonal drive body for accommodating axial impact loads; and relief grooves positioned on the beveled edges generally distal the drive end of the anvil and proximate the transition cones for providing stress relief in the anvil.