Locking anti-motion suspension

Details Locking anti-motion suspension Locking anti-motion suspension

2007-06-05

2007-06-05

Culbreth, Eric (Department: 3616)

Land vehicles

Wheeled

Running gear

C280S006159

Reexamination Certificate

active

11351038

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: 3953040 (1976-04-01), Unruh et al.
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: 6634653 (2003-10-01), Chatterjea
patent: 2003/0015847 (2003-01-01), Chatterjea
patent: 2003/0020252 (2003-01-01), Stanfield

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