Trap apparatus with bypass

US5357755A · kind A · utility

Assignee

• Donaldson Company, Inc. · US

Inventors

• Gary R. Gillingham · Prior Lake, US
• Marty Barris · Lakeville, US
• Charles O. Reinhart · Minneapolis, US
• Julian A. Imes · Bloomington, US
• Erland D. Anderson · Farmington, US
• Peter A. Betts

Key dates

• Filing date: Mar 23, 1993
• Grant date: Oct 25, 1994
• Expiry date: Mar 23, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/30
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Trap muffler apparatus with bypass around a trap core is disclosed. A preferred bypass arrangement utilizing a tubular shutter valve system is described. Forward or reverse regeneration are possible. Bypass to atmosphere without filtration is avoided with dual in-line traps or with the segmented trap and control of exhaust gases to traps not being regenerated.