Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Position responsive
Patent
1996-07-01
1998-09-22
Richter, Sheldon
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Position responsive
91 31, 91390, 91433, 91446, F15B 1110
Patent
active
058098623
ABSTRACT:
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.
REFERENCES:
patent: 2687606 (1954-08-01), Greer, Sr. et al.
patent: 2755721 (1956-07-01), Rusconi
patent: 2832276 (1958-04-01), Heitshu
patent: 2887165 (1959-05-01), Heitshu et al.
patent: 2913878 (1959-11-01), Rue
patent: 2933838 (1960-04-01), Rockwell
patent: 3592216 (1971-07-01), McMillen
patent: 3949539 (1976-04-01), Cartner
patent: 3976097 (1976-08-01), Brakel
patent: 4020867 (1977-05-01), Sumiyoshi
patent: 4401009 (1983-08-01), Zeuner et al.
patent: 4579038 (1986-04-01), Winter
patent: 4622803 (1986-11-01), Lech
patent: 5024140 (1991-06-01), Gage
patent: 5460001 (1995-10-01), Kato et al.
Richter Sheldon
Thies Donna J.
LandOfFree
Flotation control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flotation control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flotation control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1613318