Agricultural implement with ground engaging tool and fluid circu

Details Agricultural implement with ground engaging tool and fluid circu Agricultural implement with ground engaging tool and fluid circu

1998-05-20

2000-05-30

Batson, Victor

Earth working

With ground support vertically adjustable relative to frame

Power operated adjustment

91451, 91452, A01B 6322

Patent

active

060680644

ABSTRACT:
Agricultural implement to be conveyed by a self propelled vehicle includes a structural frame and a substructure moveable between a raised position and a lowered position. The substructure has at least one ground engaging tool supported thereon so as to engage the ground when the substructure is moved to the lowered position. A fluid circuit is provided to control engagement of the tool with the ground. The fluid circuit includes a first check valve having a first side connectable to a source of pressurized fluid flow and a second side connected to a fluid cylinder. The fluid cylinder is operated between a retracted position and an extended position to move the substructure between the raised position and the lowered position, respectively. A second check valve is provided having a first side connected to drain and a second side connected to the fluid cylinder. A sensor assembly opens the second check valve when pressurized fluid flow is received by the first side of the first check valve. A pressure relief valve is connected between the first check valve and the fluid cylinder, the pressure relief valve having a relief port in fluid communication with the first side of the second check valve to direct pressurized fluid thereto when the pressurized fluid between the second side of the first check valve and the fluid cylinder exceeds a preselected pressure.

REFERENCES:
patent: 3233682 (1966-02-01), Thompson
patent: 3494427 (1970-02-01), Greig et al.
patent: 3749035 (1973-07-01), Cayton et al.
patent: 3926210 (1975-12-01), Rasmussen
patent: 3974742 (1976-08-01), Johnson
patent: 4044697 (1977-08-01), Swanson
patent: 4138929 (1979-02-01), Peterson
patent: 4165675 (1979-08-01), Cryder et al.
patent: 4203275 (1980-05-01), Vermeer
patent: 4206688 (1980-06-01), Haak et al.
patent: 4214446 (1980-07-01), Bettin
patent: 4215720 (1980-08-01), Becker
patent: 4337959 (1982-07-01), Bettin et al.
patent: 4496004 (1985-01-01), Frase et al.
patent: 4648466 (1987-03-01), Baker et al.
patent: 4747257 (1988-05-01), Hutchison
patent: 4809786 (1989-03-01), Hoehn et al.
patent: 4903781 (1990-02-01), Smit
patent: 4906262 (1990-03-01), Nelson et al.
patent: 4915014 (1990-04-01), Gilmore et al.
patent: 4920732 (1990-05-01), Lee et al.
patent: 5065681 (1991-11-01), Hadley
patent: 5409069 (1995-04-01), Hake
patent: 5562165 (1996-10-01), Janelle et al.
patent: 5615553 (1997-04-01), Lourigan
patent: 5687798 (1997-11-01), Henry et al.

Affiliated with

Also associated with

Rating

Agricultural implement with ground engaging tool and fluid circu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Agricultural implement with ground engaging tool and fluid circu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Agricultural implement with ground engaging tool and fluid circu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1903958