Patent ID: 6929227

Claim:
A system for connecting mounting rails, comprising base member ( 2 ) for attachment to the mounting rail and at least one substantially angular attachment member ( 3 ) for connection to said base member, said base member has a lateral wall ( 4 . 1 , 4 . 2 , 4 . 3 ) with a first surface and a second surface with the first surface arranged to contact a first surface of said attachment member ( 3 ), said base member ( 2 ) has an axially extending opening ( 6 . 1 ) with an inside thread ( 17 ) extending through said first and second surfaces thereof, a threaded fastening means ( 7 ) for connecting said attachment member ( 3 ) to said base member ( 2 ), said base member ( 2 ) has an axially extending collar ( 10 . 1 ) formed on and extending axially outwardly from the first surface thereof, said collar ( 10 . 1 ) has an axially extending outer conical section ( 9 . 2 ) tapering inwardly from said first surface of said base plate and arranged to contact said attachment member ( 3 ), said attachment member has an axially extending opening ( 13 ) arranged to receive therein said conical section ( 8 . 1 ) of said collar ( 10 . 1 ), said base member ( 2 ) is formed of a higher strength material than said attachment member so that when said fastening means ( 7 ) is threaded into said inside thread ( 17 ) of said base member ( 2 ) said conical section ( 8 . 1 ) deforms said opening ( 13 ) of said attachment member and said base member ( 2 ) and attachment member ( 3 ) are compressed together providing a form and force locked engagement therebetween.