Back to results
US 6,295,917 B1Granted
Lost motion cylinder
OwnerCurt D. Richardsoninventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerCurt D. Richardsoninventor
Estimating the term…
A lost motion cylinder has a hydraulic cylinder having a moving piston therein wherein the piston head divides the cylinder into first and second compartments; a first conduit connected to the second compartment of the cylinder to deliver a flow of lubrication oil therein; a second conduit connected to the upper portion of the cylinder to return oil therein to a reservoir; a third conduit interconnecting the first and second conduits; a first check valve in the first conduit to permit oil to flow only towards the cylinder; a second check valve in the third conduit only to permit oil to flow from the second conduit to the first conduit; and an adjustable flow control element in the second conduit whereby the flow of oil from the cylinder to a reservoir can be selectively adjusted wherein trapped oil in the second conduit will cushion the cylinder on the upward stroke of the piston; and trapped oil in the first and second conduits will cushion the cylinder on the downward stroke of the piston.
A lost motion cylinder having a hydraulic circuit with a single fluid inlet and a single fluid outlet, and a cylinder therein containing a reciprocating mechanically driven piston, and a one-way fluid valve permitting only inlet fluid to flow through the circuit, and a one-way valve between the inlet and outlet to permit fluid to flow only in one direction from the inlet to the outlet, the invention comprising:
A lost motion cylinder comprising,
A lost motion cylinder comprising,
Dependencies are inferred from the claim text.