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:
Apr. 01, 2025
Filed:
Jul. 30, 2020
Orbital Australia Pty Ltd, Balcatta, AU;
John Howard Tubb, Befordale, AU;
Pouria Mehrani, Darch, AU;
Christian Chandrakumar Zavier, Morley, AU;
Mario Charles Muscat, Ballajura, AU;
Gary John Bone, Hocking, AU;
Trenton John Harvey, Scarborough, AU;
Orbital Australia Pty Ltd, Balcatta, AU;
Abstract
A compact muffler () for an engine exhaust system, which is particularly applicable for use with small, reciprocating piston two-stroke engines of the type used on unmanned aerial vehicles (UAVs). The compact muffler () comprises an exhaust gas flow path () between an inlet () and an outlet (). The exhaust gas flow path () comprises a plurality of adjacent flow passages (), wherein at least two of the adjacent flow passages () are fluidly connected in series to enable the flow of exhaust gas from one to the other along the flow path (). The adjacent flow passages () are configured for fluid flow therealong in opposed directions. A bypass passage () is provided between the two adjacent flow passages () for further communication between the two flow passages and to promote an equalisation of fluid pressure within the two adjacent passages (). A UAV having an internal combustion engine () fitted with an exhaust system comprising the compact muffler () is also disclosed.