Cylinder-piston unit
AssigneeLIXIL INTERNATIONAL Pte. Ltd.
InventorsChristian GILDE, Achim HEINZLE, Oliver SEIDEL
Life of this patent
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Abstract
A cylinder-piston unit for actuating a flush valve, comprising a piston which is displaceably mounted in a cylinder and the piston rod of which is operatively connected to a flush valve, and comprising at least one fluid inlet, which opens into the cylinder at or below a lower stop position of the piston, and comprising at least one fluid outlet wherein the piston comprises at least one valve which seals the piston in a lower stop position and opens at least one passage opening in an upper stop position.
Claims15
A cylinder-piston unit for actuating a flush valve, comprising:
- a cylinder;
- a piston which is displaceably mounted in the cylinder;
- a piston rod of which is operatively connected to the flush valve, and
- at least one fluid inlet, which opens into the cylinder at or below a lower stop position of the piston;
- and
- at least one fluid outlet,
- wherein the piston comprises at least one valve which seals the piston in a lower stop position and opens at least one passage opening in an upper stop position.
A method for actuating a flush valve with a cylinder-piston unit, the cylinder-piston unit comprising a piston which is displaceably mounted in a cylinder and a piston rod of which is operatively connected to the flush valve, and comprising at least one fluid inlet, which opens into the cylinder at or below a lower stop position of the piston, and comprising at least one fluid outlet, the method comprising:
- a) Lifting the piston from its lower stop position by introducing fluid through the at least one fluid inlet into the cylinder, wherein the piston comprises at least one valve which seals the piston in its lower stop position,
- b) Triggering the at least one valve to open at least one passage opening in the piston when or before the piston reaches its upper stop position, so that the fluid, which has been located beneath the piston so far, can now also pass through the piston into the region above the piston, where the fluid passing through the piston can leave the cylinder via the at least one fluid outlet,
- c) Triggering the at least one valve to close the at least one passage opening in the piston when the piston engages into its lower stop position.
(canceled)
Dependencies are inferred from the claim text.