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:
Jan. 04, 1977
Filed:
Nov. 03, 1975
Applicant:
Inventor:
John R Ford, Xenia, OH (US);
Assignee:
Vernay Laboratories, Inc., Yellow Springs, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
181 52 ; 181 57 ;
Abstract
A reactive type marine muffler which combines principles of both baffled construction and expansion chamber attenuation with a liquid flow path to provide improved sound attenuation over a broad spectrum of octave bands and a substantially lower dB(A). The baffles are preferably dome-shaped with their apices directed counter to the flow through the muffler and the expansion chambers are interconnected by a connecting tube mounted in a median baffle and projecting into adjoining expansion chambers.