The invention relates to a system of connecting a centre axle trailer to a tow vehicle in a manner that causes the effective pivotal point to be forward of the actual main tow hitch point when small angles of turn are made, in order to increase stability o...

The present invention includes a trailer 10 supported on a pair of wheels 14. When loaded, or during loading the strain in one or both arms 18 is monitored. If that exceeds a predetermined value then adjustment of the load can take place either in the forw...

A coupling member 2 is brought into a mouth 23 to contact a camming surface 61 of an engagement member 60. The member 60 rotates clockwise to bring the securement means 50 up to retain the coupling member. A camming surface 62 of the engagement member 60 c...