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. 28, 1978
Filed:
Apr. 05, 1976
Applicant:
Inventor:
Frederick D Proksch, Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F01N / ; F01N / ;
U.S. Cl.
CPC ...
181264 ; 181268 ; 181281 ;
Abstract
An attenuator for reducing exhaust noise in engines is provided which includes an exhaust pipe having a flared outlet and a frustoconically shaped attenuator member mounted therein. In an alternate embodiment, vents are provided to increase efficiency. In a further alternate embodiment, the exhaust pipe is combined with a muffler.