Locking feature for a filter
AssigneeCaterpillar Inc.
InventorsJeffrey R. Ries, Jon T. Immel, Darrell Lee Morehouse, III, Stephen Ellis Oedewaldt, Philip Carl Spengler
Life of this patent
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Abstract
A filter element includes a bottom open end joined to a center tube opposite the top open end. The bottom open end defines a radially outer surface and a radially inner surface that is in communication with the central reservoir of the filter element. A locking feature is disposed proximate to the bottom open end. The locking feature includes an entrance slot that is disposed on the radially inner surface of the center tube extending axially from the bottom open end.
Claims20
A filter element that includes at least a partially annular configuration and that defines a longitudinal axis, a radial direction, and a circumferential direction, the filter element comprising:
- an annular filter media defining a central passage;
- a center tube that is disposed in the central passage of the annular filter media that defines a central reservoir, and the annular filter media surrounds the center tube and the central reservoir;
- a top open end joined to the center tube disposed along the longitudinal axis, the top open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element;
- a bottom open end joined to the center tube opposite the top open end disposed along the longitudinal axis, the bottom open end defining a radially outer surface and a radially inner surface that is in communication with the central reservoir;
- and
- a locking feature disposed proximate to the bottom open end, the locking feature including an entrance slot that is disposed on the radially inner surface of the center tube extending axially from the bottom open end.
A pedestal for use with a canister filter system and a filter element for positioning and retaining the filter element in the canister filter system, the pedestal comprising:
- an at least partially annular body defining a longitudinal axis, a radial direction, and a circumferential direction, and including
- a top annular portion terminating at a top free end;
- and
- a tab extending radially from the top annular portion, the tab including a first axial surface, a bottom circumferential surface, and a bottom ramp surface extending from the bottom circumferential surface.
A canister filter system comprising:
- a filter element that includes at least partially a cylindrical configuration and that defines a longitudinal axis, and a radial direction, the filter element comprising:
- an annular filter media defining a central passage;
- a center tube that is disposed in the central passage of the annular filter media that defines a central reservoir, and the annular filter media surrounds the center tube and the central reservoir;
- a top open end joined to the center tube disposed along the longitudinal axis, the top open end including an opening allowing fluid to flow from the central reservoir to the outside of the filter element;
- and
- a bottom open end joined to the center tube opposite the top open end disposed along the longitudinal axis:
- a canister that includes a top open end, and a bottom open end or a bottom closed end disposed along the longitudinal axis;
- a pedestal including
- an at least partially annular body defining a longitudinal axis, a radial direction, and a circumferential direction;
- a top annular portion terminating at a top free end and defining a top diameter;
- a bottom annular portion defining a bottom diameter that is greater than the top diameter;
- and
- a tab extending radially from the top annular portion;
- and
- wherein the pedestal rests on the bottom closed end of the canister, and the filter seal is disposed below the tab of the pedestal and around the bottom annular portion while contacting the canister.
Dependencies are inferred from the claim text.