Sealing element for a brake cylinder of a vehicle braking system
AssigneeLucas Automotive GmbH
InventorMartin Struschka
Life of this patent
Estimating the term…
Abstract
A sealing element seals a pressure piston which is movably arranged in a housing of a brake cylinder. The sealing element may be inserted into a ring-shaped groove which is provided in the housing. The sealing element includes an outer sealing lip for contact with a floor of the ring-shaped groove, an inner sealing lip for contact with the pressure piston, and a sealing element back. At least one non-sealing spacer element is provided on the sealing element back.
Claims20
A sealing element that is adapted to seal a pressure piston which is movably arranged in a housing of a brake cylinder, said sealing element adapted to be inserted into a ring-shaped groove which is provided in the housing, the sealing element comprising:
- an outer sealing lip that is adapted to contact a floor of a ring-shaped groove provided within a housing of a brake cylinder,
- an inner sealing lip that is adapted to contact a pressure piston which is movably arranged in the housing of the brake cylinder, and
- a sealing element back on which at least one non-sealing spacer element and a sealing ring are provided,
- wherein the spacer element projects beyond the sealing ring when the sealing element is in an unpressurized state, and wherein the spacer element does not project beyond the sealing ring when the sealing element is in a pressurized state.
A brake cylinder comprising:
- at least one pressure piston which is movably arranged in a housing of the brake cylinder, and
- at least one sealing element which is provided in a ring-shaped groove of the housing, the sealing element having an outer sealing lip that contacts a floor of the ring-shaped groove, an inner sealing lip that contacts the pressure piston, and a sealing element back on which at least one non-sealing spacer element and a sealing ring are provided, wherein the spacer element projects beyond the sealing ring when the sealing element is in an unpressurized state, and wherein the spacer element does not project beyond the sealing ring when the sealing element is in a pressurized state.
Dependencies are inferred from the claim text.