Fuel filter

US11452956B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Andreas Kollmann · Pfalzgrafenweiler, DE
• Patrick Wieler · Cupertino, US

Key dates

• Filing date: Jun 27, 2019
• Grant date: Sep 27, 2022
• Expiry date: Jun 20, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/4061
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A fuel filter assembly includes a filter housing, a center stack, a top portion, a center stack base, and a fuel filter. The fuel filter includes a filter center support having a first portion extending along a first axial length, and a second portion extending along a second axial length, the first portion having a first inner diameter that is greater than a second inner diameter of the second portion, and having a first inner contact surface at the first inner diameter, and a filter base having an opening, the opening having an opening diameter and defining a second inner contact surface. When positioned within the filter housing, the fuel filter contacts the center stack at a first axial location and at the first inner contact surface, and it contacts a center stack base of the center stack at a second axial location and at the second inner contact surface.