Yanmar Co., Ltd.

Mineaki Ogata

Yasuyuki Oyamada

Takuzo Kawamura

Masao Nagata

Hideki Seino

Takaaki Kuroda

Kazuya Hokimoto

Hiroyuki Ohtsuki

Hisaji Amanuma

Upper rotating body for an excavator

Excavator

An extremely-small-swing working machine, comprising an operator cabin mounted on a swing table and a working arm device having a first boom section installed on the swing table on either one of the right and left sides of the cabin, a second boom section connected to the first boom section through a lower rotating shaft, a third boom section connected to the second boom section through an upper rotating shaft generally in parallel with the lower rotating shaft, an arm connected to the third boom section, and a working attachment connected to the tip of the arm, wherein the working attachment and the operation cab are formed so that they are not brought into contact with each other over the entire operating range of the working attachment without limiting or controlling the operation of the working attachment.

Extremely-small-swing working machine

Growing community of inventors

Chikugo, Japan

Mineaki Ogata