Piston, gear-change selector and gearshift
AssigneeFTE automotive GmbH
InventorsAndreas Schorn, Ralph Berger, Paul Marks, Alexander Landgraf
Life of this patent
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Abstract
A piston, in particular for a gear-change selector, including a piston body with a piston skirt and with a piston end face which can be pressurised with a working fluid. The piston includes a first sealing portion and a second sealing portion. The piston body and the first sealing portion have mutually complementary geometries so that they form a first vent channel. The first vent channel is arranged in a hydraulic series circuit with the second sealing portion. The second sealing portion prevents venting up to a first pressure and allows this above the first pressure. The invention furthermore concerns a gear-change selector and a gearshift for a vehicle.
Claims20
A piston for a gear-change selector, comprising:
- a piston body with a piston skirt and with a piston end face which can be pressurised with a working fluid,
- wherein the piston comprises a first sealing portion and a second sealing portion, wherein the piston body and the first sealing portion have mutually complementary geometries so that they form a first vent channel,
- wherein the first vent channel is arranged in a hydraulic series circuit with the second sealing portion, and
- wherein the second sealing portion is configured to prevent venting up to a first pressure and allows venting above the first pressure.
Dependencies are inferred from the claim text.