公开(公告)号：US3572528A

公开(公告)日：1971-03-30

申请号：US3572528D

申请日：1969-05-14

申请人： INT HARVESTER CO

发明人： MORTON MICHAEL D ,  CONNERS RICHARD R

IPC分类号： E02F9/14 ,  B66C23/64 ,  E02F3/34 ,  E02F3/38 ,  E04C3/04 ,  B66F9/00 ,  B66F11/00

CPC分类号： E02F3/38 ,  B66C23/64 ,  E02F3/34

摘要： A cantilever beam for use as a safety frame or a loader boom arm for a tractor having angle or channel members forming an enclosed hollow section beam. The members are secured together by welds which are spaced at progressively wider intervals from the supported end of the beam so that the stress created by a load imposed at the free end of the beam is substantially uniformly distributed along the length thereof.