Patent ID: 8876142

Claim:
An adapter serving as an anchor point for securing a trailer or other object to a vehicle having a socket with a first inside diameter, said socket including a cavity with a second inside diameter, said second inside diameter larger than said first inside diameter, said adapter comprising: a collar formed having a wall including an inner surface and an outer surface, said inner surface defining an inner chamber, said outer surface adapted to be received by said socket within said first inner diameter; an aperture formed in said wall of said collar extending through said wall from said inner surface of said wall to said outer surface of said wall, said aperture shaped as a truncated cone, having a larger diameter at said inner surface of said wall and a smaller diameter at said outer surface of said wall; an S-cam carried within said inner chamber of said collar, said S-cam being rotatable about a central axis with respect to said inner chamber and including a deep recess and a shallow recess within an outer surface of said S-cam; and a ball retained in said aperture and moveable between an retracted position and an extended position wherein said ball protrudes beyond said outer surface of said wall, said ball movable along said outer surface of said S-cam between an unlocked position corresponding to said ball being located in said deep recess and a locked position corresponding to said ball being in said shallow recess, whereby said ball protrudes into said cavity when said ball is in said shallow recess and said collar is in said socket.