Liquid filter device

US11649747B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Uli Haeussermann · Fellbach, DE
• Heiko Hensinger · Stuttgart, DE

Key dates

• Filing date: Nov 10, 2020
• Grant date: May 16, 2023
• Expiry date: Jan 30, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01M2001/1064
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A liquid filter device may include a filter housing and a ring filter element arranged in the filter housing. The filter housing may include a filter housing cover and a filter housing pot connectable tightly therewith via a housing seal. A discharge channel, a central clean channel, and a vent channel may be disposed in the filter housing pot. The ring filter element may include an upper end plate, a lower end plate, and a pleated star. When the liquid filter device is in an operating state, a pin arranged on the lower end plate may be disposed in and seal the discharge channel via a first seal, a second seal arranged on the lower end plate may be disposed against a surface of the clean channel, and a third seal arranged on the upper end plate may be disposed against a surface of the vent channel.