Experienced excavator operators rarely smack the arm of the machine into unintended objects. But, accidents do happen, and experience sometimes is the result of years of trial and error. Unfortunately, one of the prime candidates for impact with the excavator arm is the excavator itself and. depending on the machine, can include the operator cab. Obviously, having the boom hit the machine is a bad situation, and having it hit the cab is potentially disastrous,Inventors at Hitachi Construction Machinery Co. Ltd., Tokyo, Japan, have patented a new technology for avoiding such accidental impacts. The "Interference Prevention System for Two-Piece Boom-Type Hydraulic Excavators" is the work of inventors Ei Takahashi and Kazuhiro Sunamura of Tsuchiura, Japan, and Yusuke Kajita of Ushiku, Japan.
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