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US 11,992,788 B2Granted
Filter device
AssigneeMahle International GmbH
InventorsAndreas Kollmann, Patrick Wieler
Life of this patent
Estimating the term…
Abstract
A filter includes an end cap having a top surface, and a circumferential collar extending from the top surface, the circumferential collar having a radial surface that engages radially with one or more fingers that extend from an inner surface of a filter housing cover, a filter base, a filter element positioned between the end cap and the filter base, and a pin extending below the filter base.
Claims28
A filter, comprising:
- an end cap having an end cap top surface, and a circumferential collar extending from the end cap top surface, the circumferential collar having a collar top surface and two or more threads extending from an outer surface of the circumferential collar, the two or more threads positioned between the collar top surface and the end cap top surface, one or more fingers that extend from an inner surface of a filter housing cover, and lips extending inwardly from the one or more fingers, wherein the two or more threads rotationally engage with the lips to screw against the two or more threads to screw the end cap onto the filter housing cover;
- a filter base;
- a filter element positioned between the end cap and the filter base;
- and
- a pin extending below the filter base.
2 more elements
A method of fabricating a filter, comprising:
- providing an end cap having a top surface, and a circumferential collar extending from the top surface, the circumferential collar having a radial surface that engages radially with one or more fingers that extend from an inner surface of a filter housing cover;
- providing the end cap to include an upper extension from a circumferential dome extending from the top surface, the upper extension having a vent hole therein, the end cap having an air gap between the vent hole and the filter housing cover, such that a vapor or air passes through the vent hole to the air gap;
- providing a filter base;
- positioning a filter element between the end cap and the filter base;
- and
- attaching a pin to a lower surface of the filter that extends below the filter base.
3 more elements
A filter assembly, comprising:
- a filter housing having an outer wall defining a cavity;
- a center stack having a base component and a top portion, wherein the center stack is positioned within the cavity of the filter housing and attached to the filter housing, the center stack having an axial aperture in the top portion, the axial aperture having a circumferential surface;
- a filter housing cover;
- and
- a filter that includes:
- an end cap having a top surface,
- and a circumferential collar extending from the top surface, the circumferential collar having a radial surface that engages radially with one or more fingers that extend from an inner surface of the filter housing cover, the end cap having an axial extension within the circumferential collar, the end cap having a seal that seals against a surface of the center stack, and a vent hole in an upper surface of the axial extension, such that an air gap is formed above the end cap when the filter is positioned within the filter housing and such that the air gap is in fluid connection to a chamber within the center stack;
- a filter base;
- a filter element positioned between the end cap and the filter base, and
- a pin extending below the filter base.
7 more elements
A method of assembling a filter assembly, comprising:
- providing a filter housing cover having one or more fingers that extend from an inner surface of the filter housing cover;
- inserting a filter into the filter housing cover, the filter having an end cap with a top surface, and a circumferential collar extending from the top surface, the circumferential collar having a radial surface and two or more threads extending radially therefrom that rotationally engages radially with the one or more fingers that extend from the inner surface of the filter housing cover to screw against the two or more threads to screw the end cap onto the filter housing cover, the two or more threads positioned between an upper surface of the circumferential collar and the top surface of the end cap;
- inserting the filter into a filter housing such that a pin at a bottom of the filter extends into a channel of the filter housing.
Dependencies are inferred from the claim text.