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:
Feb. 18, 2003
Filed:
Jul. 27, 2001
Helmut Spannbauer, Ludwigsburg, DE;
Matthias Alex, Heilbronn, DE;
Filterwerk Mann & Hummel GmbH, Ludwigsburg, DE;
Abstract
A duct or conduit section ( ) for installation, in particular, in an air intake system of an internal combustion engine, in which the duct section is composed of two shells ( ) which are joined by a snap connection ( ). Openings located in the parting seam or joint ( ) between the shells ( ) are produced by recesses in the half shells. These openings each have a cross-sectional area of less than 7 mm and are useful for suppressing noise resulting from the air intake. As a result of the openings, vibration-inducing forces exerted on adjacent components in the engine compartment due to pulsations in the intake tube, can be minimized or avoided. Also, the quantity of additional air drawn in from the engine compartment, which is undesired because it is too warm, is decreased.