Patent ID: 7617943

Claim:
A crane lattice boom comprising the combination of at least two co-linear lattice boom sections ( 3 , 5 , 7 , 9 ), at least one guy support ( 27 , 41 ) having a width at its inner end for a rope guy arrangement with a guy rope ( 13 ) terminating at a connection point disposed at an end of the lattice boom sections, a short base ( 11 ) having a length corresponding to the width of the at least one guy support at its inner end being fixedly interposed between two elongated boom sections ( 5 , 7 ) arranged one behind the other of the boom sections ( 3 , 5 , 7 , 9 ) via non-pivoting rigid connection points with each of boom sections ( 5 , 7 ), the at least one guy support extending outwardly from the base, a pulley ( 21 ) mounted at an end of the at least one guy support ( 27 , 41 ) opposite the boom sections ( 3 , 5 , 7 , 9 ) and about which said guy rope ( 13 ) passes, and means for winding and unwinding said guy rope ( 13 ) over the pulley ( 21 ) to tension the guy rope ( 13 ), wherein said guy rope is secured to at least one of the lattice boom sections.