Land vehicles – Body elevation or tilt – Establishing riding or trim height
Reexamination Certificate
2007-01-16
2007-01-16
Dunn, David R. (Department: 3616)
Land vehicles
Body elevation or tilt
Establishing riding or trim height
C280S124159
Reexamination Certificate
active
10776912
ABSTRACT:
A hydropneumatic suspension system for a vehicle with a level control, in particular for the front axle of a tractor, includes a first 2/2 directional control valve having a regulating-up function communicating with the pressurized oil pump and a second 2/2 directional control valve having a regulating-down function communicating with a reservoir.
REFERENCES:
patent: 3550993 (1970-12-01), Peiffer
patent: 4967554 (1990-11-01), Kauss
patent: 5046310 (1991-09-01), Kauss
patent: 5318354 (1994-06-01), Tyler
patent: 5338010 (1994-08-01), Haupt
patent: 6050239 (2000-04-01), Frankle et al.
patent: 6145859 (2000-11-01), Altherr et al.
patent: 6308973 (2001-10-01), Griebel et al.
patent: 6394238 (2002-05-01), Rogala
patent: 6575484 (2003-06-01), Rogala et al.
patent: 6644169 (2003-11-01), Deininger et al.
patent: 6669216 (2003-12-01), Elser et al.
patent: 6786492 (2004-09-01), Brandenburger
patent: 2005/0225048 (2005-10-01), Kasamatsu
patent: 1780394 (1972-01-01), None
patent: 4242448 (1994-03-01), None
patent: 1326390 (1973-08-01), None
Brown Drew J.
Carl Freudenberg KG
Davidson Davidson & Kappel LLC
Dunn David R.
LandOfFree
Hydropneumatic suspension system for vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydropneumatic suspension system for vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydropneumatic suspension system for vehicles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3787929