A - Human Necessities – 01 – D
Patent
A - Human Necessities
01
D
A01D 34/86 (2006.01) F15B 11/028 (2006.01)
Patent
CA 2182431
A flotation control system for controlling the boom of a tractor or brush cutting machine. Three hydraulic valves operate together and work in conjunction with the existing main valve of the tractor or brush cutting machine to provide flotation control or automatic movement up and down of the boom in response to ground surface variations. The system also allows the amount of weight that the cutter or other attachment exerts against the ground to be increased or decreased. The first valve is a flow control valve or a flow restricting or dividing valve that divides hydraulic flow from the pump of the tractor to the flotation control system. The second valve is a pressure reducing valve that provides the general operation of the flotation control system. The third valve is a directional valve and functions as an on/off for the flotation control system. The third valve allows a float mode by moving a cylinder which is already present in the tractor hydraulic system up or down to control movement of the boom up or down. The system is used in either a closed center or open center hydraulic system. A method of providing flotation control for controlling the boom of a tractor or brush cutting machine is also disclosed.
Dallman Jimmie J.
Ridout & Maybee Llp
LandOfFree
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