Patent ID: 8342061

Claim:
A wrench adapter, comprising: a body having a base member that has a bottom surface and a top surface, wherein the body has a male drive that is square shaped, wherein the male drive has a side wall surface, wherein the body has a concave transition surface with an upper end that is flush with the side wall surface of the male drive such that a smooth transition is present from the side wall surface of the male drive to the concave transition surface across the upper end of the concave transition surface, wherein the body has a side wall and wherein the side wall has an upper edge; wherein the body has a recess surface that is defined in the top surface of the base member, wherein the recess surface has a width that increases as the recess surface extends away from the concave transition surface; wherein the male drive has a corner that has a corner surface, wherein the body has a corner transition surface with an upper end that is flush with the corner surface such that a smooth transition is present from the corner surface to the corner transition surface across the upper end of the corner transition surface; wherein the lower end of the corner transition surface is not flush with the top surface of the base member such that a smooth transition is not present from the corner transition surface to the top surface of the base member across the lower end of the corner transition surface, and wherein the lower end of the corner transition surface is spaced from the upper edge of the side wall.