Valve for opening and closing a tube

US6889649B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Arthur Klotz · Willow Grove, US
• Helmut Neuschwander · Ludwigsburg, DE

Key dates

• Filing date: Mar 3, 2003
• Grant date: May 10, 2005
• Expiry date: Apr 3, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A valve, particularly a switching cylinder, for opening and closing a pipe, especially for use in an intake manifold for a multi-cylinder internal combustion engine having an air distribution chamber and individual intake pipes positioned next to one another which terminate in a flange, in which the valve is positioned in an individual intake pipe to close or open the respective intake pipe, and the valve has at least one sealing system mounted in a radially movable manner such that, in the closed position, it presses against the pipe inner wall to form a seal, and in the open position and in the pivot range from the closed position to the open position, it forms a gap between the valve and the pipe inner wall.