Piston ring seal with pressure distribution grooves
AssigneeFoster-Miller, Inc.
InventorAndrew C. Harvey
Life of this patent
Estimating the term…
Abstract
Seal structure for positioning between two members disposed for sliding relative movement includes a band component that is adapted to be carried by one member and that has a front surface for engagement with the other member and a backup component that is seated in slidable relation on a rear surface of the band component. A seal surface is defined between two pressure distribution regions formed in the front surface of the band component, and the backup component is located in general alignment with the seal surface and provides pressure compensation at the seal interface between the seal surface and the juxtaposed surface of the other member.
Claims15
Seal structure for positioning between two members disposed for sliding relative movement comprising a band component that is adapted to be carried by one member and that has a front surface for engagement with the other member, two pressure distribution regions formed in said front surface of the band component, and a seal surface between said two pressure distribution grooves, and a backup component seated on a rear surface of said band component in general alignment with said seal surface, said backup component being free to slide on said rear surface of said band component in a direction generally perpendicular to the disposition of said pressure distribution regions and providing pressure compensation at said seal interface.
Dependencies are inferred from the claim text.