Patent ID: 9625080
Date: 2017-04-18
CPC Classifications: B66F,F15B,F16M

Claim:
1. An assembly for hydraulic fluid actuated machine leveling, the machine having a base, the assembly comprising: (a) a plurality of hydraulic cylinders, each cylinder among the plurality of hydraulic cylinders comprising an upper end adapted for supporting the machine's base, a lower end, a shaft, and a fluid port opening the cylinder; (b) a plurality of branch conduits, each conduit among the plurality of branch conduits having a cylinder end and a pump end, each branch conduit being connected in communication with one of the hydraulic cylinders' fluid ports; (c) a plurality of first shutoff valves, each valve among the plurality of first shutoff valves being connected operatively to one of the branch conduits for alternatively permitting and resisting flows of the hydraulic fluid within said one of the branch conduits; (d) a manifold conduit having a cylinder end and a pump end, the manifold conduit's cylinder end being connected in communication with the branch conduits' pump ends; (e) pressurizing means connected operatively to the manifold conduit's pump end, the pressurizing means being adapted for raising the pressure of hydraulic fluid at the manifold conduit's pump end to a shaft extending pressure; and (f) pressure relief means connected operatively to the manifold conduit's pump end, the pressure relief means being adapted for alternatively raising and lowering the pressure of the hydraulic fluid within the manifold conduit between the shaft extending pressure and a shaft retracting pressure, the shaft retracting pressure being less than the shaft extending pressure.