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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.:

US 9567944 B1

PDFFull Text
Date of Patent:
Feb. 14, 2017

Filed:

Jul. 25, 2013

Layered diaphragm

Applicant:

Walbro Engine Management, L.l.c., Tucson, AZ (US);

Inventors:

George M. Pattullo, Caro, MI (US);

David L. Speirs, Cass City, MI (US);

Assignee:

WALBRO LLC, Tucson, AZ (US);

Attorney:

Reising Ethington P.C.

Primary Examiner:

Robert A Hopkins

Int. Cl.
CPC ...
F02M 17/04 (2006.01); F02M 17/34 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 15/06 (2006.01); B32B 15/08 (2006.01); B32B 15/14 (2006.01); B32B 15/18 (2006.01); B32B 25/08 (2006.01); B32B 25/14 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B32B 3/26 (2006.01); F02M 37/04 (2006.01);
U.S. Cl.
CPC ...
F02M 17/04 (2013.01); B32B 3/266 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 7/12 (2013.01); B32B 15/06 (2013.01); B32B 15/08 (2013.01); B32B 15/14 (2013.01); B32B 15/18 (2013.01); B32B 25/08 (2013.01); B32B 25/14 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/306 (2013.01); B32B 27/32 (2013.01); B32B 27/322 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); F02M 17/34 (2013.01); B32B 2260/021 (2013.01); B32B 2260/046 (2013.01); B32B 2307/20 (2013.01); B32B 2307/50 (2013.01); B32B 2307/546 (2013.01); B32B 2307/714 (2013.01); F02M 37/046 (2013.01); Y10T 29/49117 (2015.01); Y10T 29/49231 (2015.01);
Abstract

In at least some implementations, a carburetor has a metering system that controls fuel flow from a fuel source to an air-fuel passage. The metering system includes a metering diaphragm sealed to a body of the carburetor to at least partly define a metering chamber between the metering diaphragm and the body, and the metering diaphragm has a continuous layer and a discontinuous layer. The continuous layer is responsive to fluid pressure within the metering chamber and moves against the discontinuous layer to open a metering valve to allow fuel flow from the fuel source and into the metering chamber when said fluid pressure is below a reference pressure.

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