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.

Date of Patent:
Apr. 14, 2020

Filed:

Sep. 20, 2017
Applicant:

Mtd Products Inc, Valley City, OH (US);

Inventor:

Cory Bringhurst, Valley City, OH (US);

Assignee:

MTD PRODUCTS INC, Valley City, OH (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 63/02 (2006.01); F02M 35/12 (2006.01); F02M 35/04 (2006.01); F02M 35/14 (2006.01); F02M 35/024 (2006.01); F02M 35/02 (2006.01); B01D 46/00 (2006.01); F02M 35/10 (2006.01); B01D 46/42 (2006.01);
U.S. Cl.
CPC ...
F02M 35/12 (2013.01); B01D 46/0005 (2013.01); B01D 46/0041 (2013.01); F02M 35/0201 (2013.01); F02M 35/024 (2013.01); F02M 35/0216 (2013.01); F02M 35/04 (2013.01); F02M 35/1017 (2013.01); F02M 35/14 (2013.01); B01D 46/4236 (2013.01); B01D 2275/10 (2013.01); B01D 2279/60 (2013.01); F02B 63/02 (2013.01);
Abstract

An air box assembly attached to an outdoor power tool for reducing sound generated by an engine is provided. The air box assembly includes a casing formed as an upper and lower housing attached to each other to define an enclosed space. The casing includes at least one air inlet and an air outlet. At least one filter is positioned within the casing. An air guide assembly is positioned within the casing such that the flow of air to the engine passes through the air guide assembly as it travels to the engine and sound from the engine passes through the air guide assembly as it exits the air box assembly. The air guide assembly includes a plurality of fluid pathways therein, wherein the fluid pathways are in fluid communication with the air outlet of the air box assembly.


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