Variable dampening rate suspension system

Details Variable dampening rate suspension system Variable dampening rate suspension system

2011-02-01

2011-02-01

Nguyen, Dinh Q (Department: 3752)

Fluid sprinkling, spraying, and diffusing

With mobile tank-type supply means

Spray boom or bar type distributor

C239S159000, C239S160000, C239S167000, C091S405000, C092S08500R

Reexamination Certificate

active

07878422

ABSTRACT:
A variable rate suspension system for a boom sprayer including a lift assembly and chassis. The suspension system includes a needle valve fluidly connected to a hydraulic accumulator and a first and second lift arm cylinder. A control block provides hydraulic fluid to the system and lift arm cylinders. Dampening of vertical accelerations encountered by the chassis and transmitted to the boom sprayer through the lift assembly is controlled by adjusting the rate hydraulic fluid flows from the cylinders into the accumulator using the needle valve.

REFERENCES:
patent: 4880160 (1989-11-01), Patterson et al.
patent: 6234407 (2001-05-01), Knight et al.
patent: 6315218 (2001-11-01), Guesdon
patent: 6776356 (2004-08-01), Maliteare
patent: 7040552 (2006-05-01), McCrea et al.
patent: 7395663 (2008-07-01), Thompson et al.

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