Back to results
US 11,885,416 B2Granted
Dynamic shaft seal
AssigneeCarl Freudenberg KG
InventorsJasmin Menzel, Boris Traber, Matthias Adler, Eva Fleischmann, Christine Portela Cubillo
Life of this patent
Estimating the term…
Abstract
The invention relates to a dynamic shaft seal which comprises (a) elastomer material and (b) graphene without a chemically modified surface in an amount of from 0.1 to 2 phr, in relation to 100 parts by weight of the elastomer material, as the sole constituent of the dynamic shaft seal made of elemental carbon.
Claims14
A dynamic shaft seal, comprising:
- (a) an elastomeric material, and
- (b) graphene without a chemically modified surface in an amount of 0.1 to 2 phr, based on 100 parts by weight of the elastomeric material, as the sole elemental carbon component of the dynamic shaft seal,
- wherein the dynamic shaft seal is a lip seal having a seal lip which is in radial contact with a rotating part during operation, the lip seal having to different seal edge angles.
A tribological system, comprising:
- (A) a shaft, and
- (B) a dynamic shaft seal sealingly adjacent to the shaft, the dynamic shaft seal comprising an elastomeric material and graphene without a chemically modified surface,
- wherein the dynamic shaft seal comprises the graphene without the chemically modified surface in an amount of the 0.1 to 2 phr, based on 100 parts by weight of the elastomeric material, as the sole elemental carbon component of the dynamic shaft seal, and
- wherein the dynamic shaft seal is a lip seal having a seal lip, which is in radial contact with the shaft during operation, the lip seal having two different seal edge angles.
1 more element
A method of reducing abrasion comprising the steps of:
- (i) providing a dynamic shaft seal comprising an elastomeric material and graphene without a chemically modified surface,
- wherein the dynamic shaft seal comprise the graphene without the chemically modified surface in an amount of 0.1 to 2 phr, based on 100 parts by weight of the elastomeric material, as the sole elemental carbon component of the dynamic shaft seal,
- (ii) arranging the dynamic shaft seal such that the dynamic shaft seal is sealingly adjacent to a shaft;
- and
- (iii) rotationally moving the shaft,
- wherein the dynamic shaft seal is a lip seal having a seal lip, which is in radial contact with the shaft during operation, the lip seal having two different edge angles.
3 more elements
Dependencies are inferred from the claim text.