Patent ID: 8414214

Claim:
A connection assembly comprising: a telescopic boom head ( 13 ), the telescopic boom head ( 13 ) comprising at least one upper chord ( 4 ) and at least one lower chord ( 6 ); a lattice system, the lattice system comprising at least one upper chord ( 3 ) and at least one lower chord ( 5 ); wherein: the at least one lower chord ( 6 ) of the telescopic boom head ( 13 ) comprises a first pivot connection point, and the at least one lower chord ( 5 ) of the lattice system comprises a second pivot connection point, whereby the first and second pivot connection points are pivotably connected; and the at least one upper chord ( 4 ) of the telescopic boom head ( 13 ) comprises a third pivot connection point, and the at least one upper chord ( 3 ) of the lattice system comprises a fourth pivot connection point, wherein the third and fourth pivot connection points are connected by a connecting element of variable length, the connecting element comprising: a first butt strap ( 1 ) comprising a first arm ( 9 ) and a second arm ( 10 ) extending from a junction point of the first butt strap ( 1 ), the first and second arms ( 9 , 10 ) of the first butt strap ( 1 ) forming an arm angle (a) therebetween, wherein the junction point of the first butt strap ( 1 ) is connected to the fourth pivot connection point of the at least one upper chord ( 3 ) of the lattice system; and a second butt strap ( 2 ) comprising a first arm ( 11 ) and a second arm ( 12 ) extending from a junction point of the second butt strap ( 1 ), the first and second arms ( 11 , 12 ) of the second butt strap ( 2 ) forming an arm angle (a) therebetween, wherein the junction point of the second butt strap ( 2 ) is connected to the third pivot connection point of the at least one upper chord ( 4 ) of the telescopic boom head ( 13 ); wherein the first and second arms ( 9 , 10 ) of the first butt strap ( 1 ) and the first and second arms ( 11 , 12 ) of the second butt strap ( 2 ) each comprise at least one first bore at a distal end thereof; and wherein the respective first arms ( 9 , 11 ) of the first and second butt straps ( 1 , 2 ) further comprise a second bore formed between the junction point and the first bore of the respective first arms ( 9 , 11 ) of the first and second butt straps ( 1 , 2 ); whereby in a first configuration, the respective first bores of the first arms ( 9 , 11 ) of the first and second butt straps ( 1 , 2 ) are connected, such that a first angle is formed between the lower chords ( 6 ) of the telescopic boom head ( 13 ) and the lower chords ( 5 ) of the lattice system; and whereby in a second configuration, the respective second bores of the respective first and second arms ( 9 , 11 ) of the first and second butt straps ( 1 , 2 ) are connected, such that a second angle is formed between the lower chords ( 6 ) of the telescopic boom head ( 13 ) and the lower chords ( 5 ) and the lattice system, wherein the second angle is less than the first angle.