Suction air filter for combustion engines

US5137557A · kind A · utility

Assignee

• Deere & Company · US

Inventors

• Bernhard Behrendt · Bornsteiner Straße, DE
• Friedrich Benning · Schwetzingen, DE
• Volker Ernst · Sachsenheim, DE
• Herbert Gelb · Hockenheim, DE
• Arthur Klotz · Willow Grove, US
• Rudolf Leipelt · Oberstenfeld, DE
• Albert Scheuermann · Bad Mergentheim, DE
• Michael Teich · Mannheim, DE

Key dates

• Filing date: Oct 18, 1991
• Grant date: Aug 11, 1992
• Expiry date: Oct 18, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2265/022
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A suction air filter for a combustion engine includes a filter housing for receiving a filter insert and an attachment housing to which the filter housing is attached. The filter housing has a coupling end for coupling with a corresponding coupling end of the attachment housing. The suction air filter has an unfiltered air intake and a pure air outlet. A plurality of cam members are mounted on the outside of the filter housing near the coupling end thereof, and a plurality of cam elements are mounted on the outside of the attachment housing near the coupling end thereof. A rotatable coupling ring is mounted to receive the coupling ends of the filter housing and the attachment housing, and the coupling ring carries wedge members which are engagable with the cam members and the cam elements to releasably couple together the coupling ends of the housings. Dust protection shoulders or labyrinth seals are provided on both sides of the coupling ring to prevent dust from penetrating in the closure area of the attachment portion and the housing. A turning of the coupling ring effects a fixing of the filter housing to the attachment housing.