The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2004
Filed:
Feb. 04, 2002
Herbert Pietrowski, Pleidelsheim, DE;
Thomas Jessberger, Rutesheim, DE;
Ingo Koch, Ludwigsburg, DE;
Helmut Neuschwander, Ludwigsburg, DE;
Eckehard Mandel, Ludwigsburg, DE;
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Abstract
An intake manifold ( ) for a multi-cylinder internal combustion engine includes a tubular intake distributor ( ) from which a plurality of long intake tubes ( ) extend and lead to the individual cylinders. Short intake tubes ( ) likewise extend from the intake distributor and open into the respective associated long intake tubes ( ). The intake distributor ( ) and the long and short intake tubes ( ) are formed from a one-piece housing ( ) which has a cavity ( ) which intersects the short intake tubes ( ). In this cavity ( ) a control element ( ) is installed, which includes flaps ( ), flap frames ( ), a shaft ( ) and a control element frame ( ). By moving the shaft ( ) either rotationally or translationally, the short intake tubes ( ) can be opened or closed. In contrast to arrangements known in the prior art, the control element ( ) has no sealing elements which can catch or jam during assembly. Additionally, the arrangement of the flaps ( ) on a continuous shaft ( ) provides a space-saving apparatus.