Filter device with closing arrangement and key opening connection

US5560824A · kind A · utility

Assignee

• HYDAC FILTERTECHNIK GMBH · DE

Inventors

• Norbert Sann · Riegelsberg, DE
• Jurgen Hausdorf · Saarburg, DE

Key dates

• Filing date: Sep 21, 1995
• Grant date: Oct 1, 1996
• Expiry date: Sep 21, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2201/302
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter device has a housing with connections for a fluid and can be secured to a filter pot. The filter has a filter element secured by a holder. A closure prevents the undesired leakage of fluid. The closure has two sealing plates with at least partly bound openings in mutually staggered array in two different planes. The openings can be mutually moved under the effect of a power store for closing or opening the openings. As the filter pot is moved further away from the housing, the closure gradually seals at least one of the connections and/or the filter pot off from the environment. The filter device has a universally usable closure which can be economically produced, requires little space inside the device and operates reliable.