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:
Dec. 15, 1981
Filed:
Dec. 20, 1979
James W Moore, Horicon, WI (US);
Deere & Company, Moline, IL (US);
Abstract
A tuning chamber means particularly suited to two-cycle internal combustion engines includes an exhaust inlet pipe to receive exhaust from the exhaust ports of an engine, communicating with a diverging conical section which is followed by an exhaust chamber. An elliptically-shaped flat plate is located in the straight tubular section comprising the exhaust chamber. The plate is angled to produce a converging area at the end of the expansion chamber. An exhaust pipe or stinger is in communication with the interior of the expansion chamber in close proximity to the surface of the flat plate to receive engine exhaust gases and conduct the gases to the surrounding environment. Alternatively, the stinger can be so constructed that both ends of the stinger are closed, having a plurality of perforations in proximity to each end of the stinger to receive and exhaust gases to the surrounding environment from the exhaust chamber.