Locking anti-motion suspension

Details Locking anti-motion suspension Locking anti-motion suspension

2006-05-16

2006-05-16

Fleming, Faye M. (Department: 3616)

Land vehicles

Body elevation or tilt

Establishing riding or trim height

C280S124160, C280S124162

Reexamination Certificate

active

07044482

ABSTRACT:
A skid steer vehicle has a suspension that includes a control arm pivotally coupled to the vehicle chassis that is supported by a hydraulic cylinder connected to an accumulator to provide springing. A hydraulic circuit coupled to the cylinder and accumulator permit the operator to raise and lower the chassis, to lock the suspension while the vehicle is loaded, and to automatically charge or discharge the accumulator to match the cylinder pressure during loading and unloading. In this manner, when the suspension is unlocked after loading, the vehicle chassis neither rises nor falls.

REFERENCES:
patent: 4186814 (1980-02-01), Hart
patent: 4186815 (1980-02-01), Hart
patent: 5538266 (1996-07-01), Martin et al.
patent: 6578855 (2003-06-01), Wallestad
patent: 2003/0015847 (2003-01-01), Chatterjea
patent: 2003/0020252 (2003-01-01), Stanfield

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