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US 11,629,785 B2Granted
Fiber reinforced seal lips for increased pressure resistance
AssigneeParker-Hannifin Corporation
InventorJesse D. Slagell
Life of this patent
Estimating the term…
Abstract
A radial lip seal includes a sealing lip body having a contact point defining an inner diameter of the radial lip seal, and a heelstock body defining an outer diameter and having a supporting section arranged radially inwardly relative to the outer diameter and extending along a boundary of the sealing lip body toward the contact point. The heelstock body is formed of a heelstock material that is flexible, and the heelstock material is stiffer relative to a material of the sealing lip body.
Claims19
A radial lip seal comprising:
- a sealing lip body having a contact point defining an inner diameter of the radial lip seal, and
- a heelstock body comprising a main body and a supporting section,
- wherein the radial lip seal has a radially outer section comprising an axial edge of the main body and an axial edge of the sealing lip body, wherein the axial edge of the main body and the axial edge of the sealing lip body form a flush axial edge that is distally opposite the supporting section;
- the heelstock body defining an outermost diameter of the radial lip seal and having the supporting section that is arranged radially inwardly relative to the outermost diameter and extends along a boundary of the sealing lip body toward the contact point,
- wherein the heelstock body is formed of a heelstock material that is flexible, and the heelstock material is stiffer relative to a material of the sealing lip body, and
- wherein the heelstock material is formed of only non-metal material.
3 more elements
A method of forming a radial lip seal comprising:
- forming a sealing lip body having a contact point defining an inner diameter of the radial lip seal and a heelstock body comprising a main body and a supporting section, wherein the radial lip seal has a radially outer section comprising an axial edge of the main body and an axial edge of the sealing lip body, wherein the axial edge of the main body and the axial edge of the sealing lip body form a flush axial edge that is distally opposite the supporting section;
- forming the heelstock body defining an outermost diameter of the radial lip seal and having the supporting section arranged radially inwardly relative to the outermost diameter;
- forming the heelstock body of a heelstock material that is flexible and stiffer relative to a material of the sealing lip body, wherein the heelstock material is formed of only non-metal material;
- and
- bonding the heelstock body and the sealing lip body, wherein the heelstock body extends along a boundary of the sealing lip body toward the contact point.
2 more elements
Dependencies are inferred from the claim text.