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:
Nov. 23, 1976
Filed:
Jan. 06, 1975
Applicant:
Inventor:
German Amador, Houston, TX (US);
Assignee:
Dresser Industries, Inc., Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
181 / ; 181 59 ;
Abstract
A muffler for reducing the noise level of the air exhaust from a governed pneumatic tool. Exhaust ports in the tool housing communicate with the interior cavity of a muffler body having selectively located port holes for discharging exhaust from the cavity to atmosphere. Contained in the muffler cavity is a foraminous baffle plate centrally supported in the path of discharge between the exhaust ports of the housing and the discharge ports of the muffler body. Extending about the baffle periphery are a plurality of bypass passages defining a flow path parallel to the baffle and sized to accommodate total air flow at maximum capacity.