Hydraulically driven working machine

Details Hydraulically driven working machine Hydraulically driven working machine

2006-03-07

2006-03-07

Lillis, Eileen D. (Department: 3652)

Material or article handling

Vertically swinging load support

Shovel or fork type

C414S685000, C414S918000

Reexamination Certificate

active

07008169

ABSTRACT:
A pair of supported portions are provided in a bifurcated manner on the base end of the boom of a work machine. Operation oil hoses for an arm cylinder and operation oil hoses for a bucket cylinder are guided and piped into the boom from between both the supported portions. A hose guide hole is provided below each of the boom support portions so that operation oil hoses for the boom cylinder are inserted into the respective hose guide holes. At an intermediate portion of the rear surface of the boom, the operation oil hoses are taken out from the inside of the boom through a hose attachment plate and connected to respective external hoses connected to the arm cylinder. At a tip end of the boom, the operation oil hoses are pulled out from the inside of the boom through a rear side inclined surface of an angle rib.

REFERENCES:
patent: 3220579 (1965-11-01), Pilch
patent: D309313 (1990-07-01), Takashima et al.
patent: 5232330 (1993-08-01), Rae et al.
patent: 6158949 (2000-12-01), Walth et al.
patent: 56-5068 (1981-01-01), None
patent: 58-30851 (1983-07-01), None
patent: 3-103351 (1991-10-01), None
patent: 6-60647 (1994-08-01), None
patent: 8-218417 (1996-08-01), None
patent: 9-209385 (1997-08-01), None
patent: 9-296475 (1997-11-01), None

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