Hybrid pressure seal
OwnerChristopher Todd Barnett, Micheal Cole Thomas +3inventors
InventorsChristopher Todd Barnett, Micheal Cole Thomas, John Keith, Nicholas Son, Kelcy Jake Foster
Life of this patent
Estimating the term…
Abstract
A hybrid pressure seal for use in a plunger bore or a stuffing box used in a plunger bore. The hybrid seal has a first, inner seal made of a first, durable material. The inner seal has a cut-out formed in its outer surface in which an outer seal is placed. The inner seal may have features on its inner surface such as V-shaped protrusions or a D-shaped surface. The outer seal is elastomeric. One or more hybrid seals of different configurations may be used in a packing, disposed between a junk ring and a lantern ring. The lantern ring may be integral with and made of the same material as an adjacent hybrid seal.
Claims30
A plunger packing comprising:
- a junk ring;
- and
- a monolithic piece, comprising:
- a lantern ring;
- and
- at least one hybrid seal, comprising:
- an inner seal, the inner seal having an outwardly-facing annular cutout and an inner surface situated between a front surface and a rear surface, the inner surface configured to seal against a reciprocating plunger and comprising at least one non-linear protrusion situated in a spaced relationship from the front and rear surfaces;
- and
- an outer seal, disposed in the outwardly-facing annular cutout of the inner seal, wherein the outer seal is comprised of a different material than the inner seal;
- in which the at least one hybrid seal of the monolithic piece is positioned adjacent to the junk ring.
Dependencies are inferred from the claim text.