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:
Oct. 06, 1987
Filed:
Jan. 13, 1986
Applicant:
Inventor:
Irvy T Barker, Stoughton, WI (US);
Assignee:
Nelson Industries Inc., Stoughton, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
181262 ; 181255 ;
Abstract
An aspirating muffler having a simplified venturi construction. The muffler includes a body having an inlet pipe connected to the exhaust system of an engine and having an outlet pipe. The upstream end of the outlet pipe is rolled inwardly to provide the end with a reduced cross sectional area which defines a venturi. An aspirating tube which is connected to an air cleaner pre-cleaner for the engine communicates with the venturi and flow of exhaust gas through the venturi end of the outlet pipe creates an aspirating action to draw solid particles from the pre-cleaner and discharge the particles through the outlet pipe to the atmosphere.