Work machine

Details Work machine Work machine

2005-09-08

2008-12-16

Beach, Thomas A (Department: 3671)

Excavating

Ditcher

Condition responsive

C037S414000, C091S291000, C060S431000

Reexamination Certificate

active

07464493

ABSTRACT:
A work machine is provided having a starter motor for starting a prime mover, which without provision of any special hydraulic equipment, allows for draining pressure oil that still remains in a hydraulic actuator for driving a front attachment. The work machine is provided with a boom cylinder for driving a front attachment, a flow rate control valve for controlling a flow of pressure oil to be supplied to the boom cylinder, and a pilot valve for producing an output of a pilot control signal, which serves to switch the flow rate control valve, by using, as a primary pressure, pressure oil delivered from a pilot hydraulic pump driven by an engine. A fuel stop switch is provided for performing stop control on a supply of fuel, which drives the engine, and a switch is provided for maintaining drivable a starter motor, which starts the engine, responsive to the stop control of the supply of fuel to the engine by the fuel stop switch.

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patent: WO 01/92651 (2001-12-01), None
International Search Report dated Oct. 25, 2005 with English translation of relevant portion (Four (4) pages).

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