Earth working – Mast type hitch
Reexamination Certificate
2006-01-31
2006-01-31
Pezzuto, Robert E (Department: 3671)
Earth working
Mast type hitch
Reexamination Certificate
active
06991042
ABSTRACT:
A working machine lifting device of a tractor, comprising externally installed hydraulic lift cylinders disposed on the right and left sides of a transmission casing, lift arms rotated by the operation of the cylinders, and lower links vertically rotated by the rotation of the lift arms and connected to a working machine, wherein the cylinder and the lower link are rotatably supported on a same pin supported by the transmission casing and a sway chain bracket, and the support point of the cylinder and the vertical rotating pivot of the lower link are positioned on the axis of the pin.
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Hayashi Keiichi
Isogai Takayuki
Ochi Tomofumi
Pezzuto Robert E
Sterne Kessler Goldstein & Fox P.L.L.C.
Yanmar Agricultural Equipment Co., Ltd.
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