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. 26, 1976
Filed:
Feb. 22, 1974
William M Betts, Pompano Beach, FL (US);
Other;
Abstract
A silencing device or muffler for internal combustion engines comprises a hollow body including an outer shell having an inlet port and an outlet port. At least one apertured conical element or frusto-conical cup is arranged in the shell to form at least one inner expansion chamber therein. The conical element includes a completely solid wall structure that is impermeable to exhaust gas and has at least one opening along only the bottom portion thereof to cause all of the exhaust gases to move therethrough. A further feature includes a baffle plate disposed transversely of the interior of the shell and in operative relationship to the conical elements. The plate is shaped or apertured to permit a flow of exhaust gas around or through it when the gas passes into the shell and through the opening in said conical element.