Hydraulic system for a vehicle, a vehicle including such a...

Details Hydraulic system for a vehicle, a vehicle including such a... Hydraulic system for a vehicle, a vehicle including such a...

2006-07-04

2006-07-04

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of...

C060S421000

Reexamination Certificate

active

07069722

ABSTRACT:
A hydraulic system for a vehicle has a hydraulic, load carrying assembly which has a movable structural element and a hydraulic device for actuating the structural element. The hydraulic system has a primary circuit having a servo device, a stationary hydraulic pump, a directional valve, and the hydraulic device, which are arranged in order to operate the assembly. The hydraulic system has a supplementary circuit, being connected to the primary circuit and including a variable hydraulic pump which is arranged in order to supply an adjustable addition of hydraulic oil to the hydraulic device, and a proportional valve being arranged between the variable hydraulic pump and the hydraulic device in order to regulate the flow of hydraulic oil to the hydraulic device as a function of a received flow signal.

REFERENCES:
patent: 3972187 (1976-08-01), Ital et al.
patent: 5146746 (1992-09-01), Nagai et al.
patent: 5261232 (1993-11-01), Maffini et al.
patent: 5481874 (1996-01-01), Budzich
patent: 5946910 (1999-09-01), Hayashi et al.
patent: 6135694 (2000-10-01), Trego et al.
patent: 6612109 (2003-09-01), Mickelson
patent: 2001/0030085 (2001-10-01), Nagata et al.

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