Hydraulic circuit with drive-connected valve and associated pump
AssigneeExel Industries
InventorsNicolas PLANTARD, Boussif KHALDI, Amadou DIALLO
Life of this patent
Estimating the term…
Abstract
A hydraulic circuit of a hydraulic pump with air motor, the hydraulic circuit including a circuit section containing a fluid. The hydraulic circuit includes a valve chamber and a valve arranged in the valve chamber and translationally movable in the valve chamber between an operating position and a relief position. The valve separates the valve chamber into a first sub-chamber and a second sub-chamber, the volumes of which vary as a function of movement of the valve, the valve being translated as a function of pressure at a first inlet of the first sub-chamber and pressure at a second inlet of the second sub-chamber.
Claims12
A hydraulic circuit of a hydraulic pump with an air motor, the hydraulic circuit comprising:
- a circuit section, the circuit section containing a fluid, the hydraulic circuit being adapted so that the fluid in the circuit section is driven by the air motor of the hydraulic pump;
- a valve chamber;
- and
- a valve, the valve being arranged in said valve chamber, the valve being movable in translation in said valve chamber between an operating position and a relief position, wherein the valve divides said valve chamber into a first sub-chamber and a second sub-chamber, each of the first and second sub-chambers comprising a variable volume depending on movement of the valve, the first sub-chamber comprising a first inlet connected to a tapping point of said circuit section, the second sub-chamber comprising a second inlet, the second inlet being adapted to be connected to an air connection of the air motor, the valve being driven in translation according to pressure at the first inlet and pressure at the second inlet.
Dependencies are inferred from the claim text.