Filter assembly having cryogenic seal arrangement
AssigneeCaterpillar Inc.
InventorsDaniel Raymond BALDWIN, David Todd MONTGOMERY
Life of this patent
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Abstract
A seal arrangement for joining a first component to a second component is disclosed. The seal arrangement may have a first sealing surface formed as an integral portion of the first component, and a second sealing surface formed as an integral portion of the second component and configured to directly engage the first sealing surface. The seal arrangement may also have an energizer engaged with the first sealing surface and configured to inhibit movement of the first sealing surface away from the second sealing surface during a temperature drop.
Claims20
A seal arrangement for joining a first component to a second component, the seal arrangement comprising:
- a first sealing surface formed as a stationary and integral portion of the first component;
- a second sealing surface formed as a stationary and integral portion of the second component and configured to directly engage the first sealing surface;
- and
- an energizer engaged with the first sealing surface and configured to inhibit movement of the first sealing surface away from the second sealing surface during a temperature drop.
A filter cartridge, comprising:
- a canister;
- a filtration medium disposed inside the canister;
- a protrusion extending axially from an end of at least one of the canister or the filtration medium and having a sealing surface formed thereon;
- and
- an energizer ring connected to the protrusion at a radial side opposite the sealing surface, the energizer ring having a coefficient of thermal expansion greater than the protrusion.
A filter assembly, comprising:
- a base having a recess and a first sealing surface formed inside of the recess;
- a cylindrical canister configured to engage the base;
- a compression seal disposed between the base and a shoulder of the cylindrical canister;
- a filtration medium disposed inside the cylindrical canister;
- a protrusion extending axially from an end of at least one of the canister or the filtration medium into the recess of the base and having a second sealing surface formed thereon that is configured to directly engage the first sealing surface when the protrusion is connected to the base at a first temperature;
- and
- an energizer ring connected to at least one of the base and the protrusion at a radial side opposite a corresponding one of the first or second sealing surfaces, the energizer ring having a coefficient of thermal expansion greater than a coefficient of thermal expansion of the at least one of the base and the protrusion and being configured to inhibit the first and second sealing surfaces from moving away from each other when exposed to a second temperature colder than the first temperature.
Dependencies are inferred from the claim text.