Coupling arrangement

A tow coupling to connect a towing vehicle to a trailer, said coupling comprising:

• a vehicle bar connected to said vehicle;
• a trailer bar connected to said trailer;
• an elongated spigot tubular arrangement extending generally vertically from said vehicle bar and having a groove therearound intermediate its ends;
• a cup-shaped member, adapted to be received over said spigot, provided with a groove therethrough adapted to align with said groove of said spigot such that a first locking pin may be provided therein and maintain a locking relationship between said cup-shaped member and said spigot while allowing pivotal movement therebetween defining a first pivot axis, said cup-shaped member also provided with a rearwardly extending extension provided with a generally horizontal bar extending transversely therethrough;
• a link member provided with a pair of arms at a first end therof and a longitudinal bore at a second end thereof, said arms being provided with through holes adapted to align with said bore of said cup-shaped member and said link member is allowed defining a second axis being in a direction substantially normal to said first pivot axis, and, a groove being provided in a substantially horizontal relationship intersecting said longitudinal bore intermediate the ends thereof;
• and,
• a cylindrical shaft, a first end thereof adapted to be received in said longitudinal bore, and a second end thereof attached to said trailer bar, said first end being provided with a groove provided circumferentially therearound and being adapted to align with said groove of said link member such as to receive a third locking pin such that pivotal movement between said link member and said cylindrical shaft is allowed defining a third pivot axis being in a direction substantially normal to each of said first and second pivot axes.