Control system using a single proportional valve

Details Control system using a single proportional valve Control system using a single proportional valve

2006-04-18

2010-12-28

Will, Thomas B (Department: 3671)

Earth working

Automatic power control

C172S812000

Reexamination Certificate

active

07857070

ABSTRACT:
The present invention relates to machinery having multiple hydraulically actuated functions and, more particularly, to a control system for using a single proportional valve to control multiple hydraulically actuated functions on a piece of machinery such as a tractor or front-end wheel loader.

REFERENCES:
patent: 5394697 (1995-03-01), Hirata
patent: 5467829 (1995-11-01), Barton et al.
patent: 5488787 (1996-02-01), Aoyagi et al.
patent: 5682955 (1997-11-01), Groth et al.
patent: 6650985 (2003-11-01), Lin et al.
patent: 7155909 (2007-01-01), Toji
patent: 7269944 (2007-09-01), Zhang et al.
patent: 2002/0112475 (2002-08-01), Cannestra
patent: 2007/0089408 (2007-04-01), Toji

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