Patent ID: 7527281

Claim:
A boat trailer, comprising: a support section comprising a frame; a coupler arm having a front end and a rear end, wherein the front end of the coupler arm is configured for attachment to a towing vehicle, wherein at least one molded knuckle is positioned adjacent a first side of the rear end of the coupler arm, the knuckle comprising an elongate, internal shaft and having an internal cavity; a front arm having a front end and a rear end, wherein the rear end of the front arm is configured for attachment to the support section, wherein at least one molded knuckle is positioned adjacent a first side of the front end of the front arm, the knuckle comprising an elongate, internal shaft and having an internal cavity; and a hinge region, wherein the coupler arm knuckle co-axially aligns with the front arm knuckle such that the elongate, internal shafts form common rotation channels sized to receive a rotator pin at the hinge region, wherein the coupler arm can pivot about an axis of the rotator pin between (1) an operating position wherein the coupler arm and front arm share a common longitudinal axis, and (2) a stow position wherein the coupler arm is oriented transverse to the front arm; wherein the internal cavities have shapes that correspond to an outer shape of the knuckles.