Patent ID: 8282117

Claim:
A bicycle trailer hitch comprising: a bicycle attachment section adapted to be coupled with a bicycle, the bicycle attachment section including a cylindrical portion having (i) a cylinder longitudinal center axis generally horizontal to the ground when installed, (ii) a cylinder length and (iii) a cylinder outside diameter; and a trailer attachment section adapted to connect with a bicycle trailer, the trailer attachment section including a cavity portion having a shape of a partial cylinder, the cavity portion having (a) an effective cavity longitudinal center axis, (b) a longitudinally extending side having an annular inside surface at least partially defining a cavity, (c) a cavity length and (d) an effective cavity diameter; wherein the cylinder length is substantially similar to the cavity length, the cylinder outside diameter is substantially similar to the effective cavity diameter, and the cylindrical portion is adapted to be matingly received in the cavity portion to connect the bicycle to the bicycle trailer and transfer load therebetween during use; and wherein the longitudinally extending side of the cavity portion includes an elongated circumferentially-extending notch located at about a longitudinal midpoint location on the longitudinally extending side.