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:
Apr. 15, 1980
Filed:
Feb. 27, 1978
Applicant:
Inventors:
Assignee:
Volkswagenwerk Aktiengesellschaft, Wolfsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
181229 ; 55276 ; 55DI / ; 138115 ; 138D / ;
Abstract
An air intake pipe, for mounting to the air filter of an internal combustion engine has two air flow channels having different lengths. A duct is provided between the air flow channels connecting them over their entire length. The duct is dimensioned to provide both sound attenuation and acoustic wave interference between intake noises in the two channels. Thus, the intake pipe acts as an intake noise silencer.
Weber, Otto. (1980). Air intake pipe for an internal combustion engine (U.S. Patent No. 4197922). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4197922
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile