Patent ID: 8696011
Filing Date: 2014-04-15
Classification: B60D,Y10T

Abstract:
1. A trailer-hitch system comprising: a hitch frame adapted to be secured to a vehicle and having a receiver for accommodating a foremost end of a mount unit, the receiver of the hitch frame being tubular and having a polygonal cross-section; a mount unit having a member portion in mating engagement with the receiver of the hitch frame and having at a rearmost end a connector for connection with a trailer, the member portion being tubular and having a polygonal cross-section corresponding to that of the receiver; and a mechanism actuated to press a portion of the member portion against the receiver for locking the mount unit into the mating engagement with the receiver, the mechanism comprising a wedge bar slidingly engaged for axial displacement in the member portion with the wedge bar having at least one wedge surface, at least two abutments operatively contacting the at least one wedge surface and accommodated in respective openings of the member portion, the openings being defined in an edge of the member portion at a junction between a pair of side surfaces, the abutments moving between a projecting position wherein the abutments project out of the edge of the member portion and against an inner corner of the receiver to press the member portion against two surfaces of the receiver, and a retracted position wherein the abutment is retracted within the member portion, as a result of axial displacement of the wedge bar in the member portion.