Patent ID: 6012763
Filing Date: 2000-01-11
Classification: B60J,E05D,E05Y,F16B

Abstract:
In a truck trailer, a trailer door and door hinges hingedly supporting the trailer door on the truck trailer, and an improved trailer door fastener for reliably fastening the trailer door to an interfacing door hinge plate, said improvement comprising:a nut having a washer face and a hollow cylindrical portion having a cylindrical portion diameter and a cylindrical portion length extending from the washer face coaxial and perpendicular to the washer face and having an end opposite the washer face, with the hollow cylindrical portion having internal threads throughout the cylindrical portion length and extending to the end;a bolt having a head and a shank extending from the head and coaxial and perpendicular to the head, the shank having a first shank portion adjacent the head having a first shank portion diameter, a first shank portion length, and a knurled surface extending across the interface between the trailer door and the door hinge plate, and a second shank portion extending from the first shank portion to a shank end opposite the head,said second shank portion having external threads, a second shank portion diameter and a second shank portion length, wherein the external threads are adapted to engage the internal threads of the hollow cylindrical portion of the nut; andwherein (a) the cylindrical portion first length is approximately equal to the second shank portion length, (b) the cylindrical portion diameter is approximately equal to the first shank portion diameter, and (c) the sum of the cylindrical portion length and the first shank portion length is approximately equal to the combined thickness of the trailer door and the door hinge plate, whereby the internal threads of the cylindrical portion abut the first shank portion when the fastener fastens the trailer door to the door hinge plate.