Hydraulic and earth engineering – Earth treatment or control – Ground stabilization or reinforcement
Patent
1983-12-21
1986-09-23
Husar, Cornelius J.
Hydraulic and earth engineering
Earth treatment or control
Ground stabilization or reinforcement
405293, 405299, 91189R, 91520, E21D 1514, E21D 2300, E21D 2316, F15B 1120
Patent
active
046132570
ABSTRACT:
A hydraulic control arrangement comprises a first hydraulic ram, a second hydraulic ram, and a hydraulic control circuit associated with the first and second hydraulic rams. Each of the hydraulic rams has a cylinder, a piston reciprocable within the cylinder, and a piston rod fixed to the piston. Each of the hydraulic rams has a cylindrical working chamber and an annular working chamber positioned on opposite sides of its piston. The piston rod of each hydraulic ram constitutes the cylinder of a respective metering ram, a respective metering piston being reciprocable within the cylinder of each metering ram to define a metering chamber therewithin. The hydraulic control circuit includes a line, which interconnects the two metering chambers, and a hydraulic valve positioned in a hydraulic fluid supply line leading to the cylindrical working chamber of the second hydraulic ram. The metering piston of the second hydraulic ram controls the hydraulic valve, thereby controlling the flow of hydraulic fluid to the cylindrical working chamber of the second hydraulic ram.
REFERENCES:
patent: 3030930 (1962-04-01), Gratzmuller
patent: 3426649 (1969-02-01), Koppers
patent: 4192222 (1980-03-01), Dits
patent: 4192482 (1980-03-01), Goldman et al.
patent: 4234130 (1980-11-01), Trott et al.
patent: 4343226 (1982-08-01), de Almeida
patent: 4427321 (1984-01-01), Weirich et al.
patent: 4440522 (1984-04-01), Dettmers et al.
Dettmers Michael
Weirich Walter
Gewerkschaft Eisenhutte Westfalia
Husar Cornelius J.
Stodola Nancy J.
LandOfFree
Hydraulic control arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic control arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-763930