Hydraulic system
AssigneesUniversite Pierre et Marie Curie, Centre National De La Recherche Scientifique
InventorsStefan Klotz, Gerard Hamel, Joel Frelat
Life of this patent
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Abstract
The present invention relates to a hydraulic system that includes a compression chamber capable of being subjected to the pressure of a hydraulic fluid; a piston movable inside the compression chamber along an axis; and at least one sealing gasket disposed between the piston and a wall of the compression chamber, the gasket occupying an axial position that varies circumferentially around the axis in such a manner as to compensate for non-axially symmetrical stresses induced by the pressure of the fluid.
Claims19
A hydraulic system comprising:
- a compression chamber for receiving a hydraulic fluid under pressure;
- a piston movable inside the compression chamber along an axis;
- and
- at least one sealing gasket disposed between the piston and a wall of the compression chamber, the gasket occupying an axial position that varies circumferentially around the axis to compensate for non-axially symmetrical stresses induced by the pressure of the fluid,
- wherein the piston includes a groove of undulating shape in which the sealing gasket is received.
A hydraulic system comprising:
- a compression chamber for receiving a hydraulic fluid under pressure;
- a piston movable inside the compression chamber along an axis;
- and
- at least one sealing gasket disposed between the piston and a wall of the compression chamber, the gasket occupying an axial position that varies circumferentially around the axis to compensate for non-axially symmetrical stresses induced by the pressure of the fluid,
- wherein:
- the compression chamber is defined in a base portion and the hydraulic system includes a platform connected by two traction members to the base portion, the piston is arranged to exert a force towards the platform, and the sealing gasket is disposed in such a manner as to compensate for the non-axially symmetrical stresses induced by the reaction from the traction members under the effect of the force exerted by the piston on the platform, and
- the piston includes a groove of undulating shape in which the sealing gasket is received, the undulating shape presenting peaks, corresponding to maximum departure from the end of the compression chamber and disposed substantially in register with the traction members.
A hydraulic system comprising:
- a compression chamber for receiving a hydraulic fluid under pressure;
- a piston movable inside the compression chamber along an axis;
- and
- at least one sealing gasket disposed between the piston and a wall of the compression chamber, the gasket occupying an axial position that varies circumferentially around the axis to compensate for non-axially symmetrical stresses induced by the pressure of the fluid, the axial position being given by the following formula:
- z(φ)=z0+A sin4(φ)
- φ being the angle about the axis and z0 and A being constants,
- wherein the compression chamber is defined in a base portion and the hydraulic system includes a platform connected by two traction members to the base portion, the piston is arranged to exert a force towards the platform, the sealing gasket is disposed in such a manner as to compensate for the non-axially symmetrical stresses induced by the reaction from the traction members under the effect of the force exerted by the piston on the platform, and
- the piston includes a groove of undulating shape in which the sealing gasket is received, the undulating shape presenting peaks, corresponding to maximum departure from the end of the compression chamber and disposed substantially in register with the traction members.
Dependencies are inferred from the claim text.