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:
Mar. 05, 2019
Filed:
Dec. 09, 2014
Keith Hampton, Ann Arbor, MI (US);
David Fletcher, Flint, MI (US);
Brian M. Graichen, Leonard, MI (US);
Rex Bravo, Detroit, MI (US);
James H. Miller, Ortonville, MI (US);
Matt Gilmer, Whitmore Lake, MI (US);
Andrew Niedert, New Hudson, MI (US);
Keith Hampton, Ann Arbor, MI (US);
David Fletcher, Flint, MI (US);
Brian M. Graichen, Leonard, MI (US);
Rex Bravo, Detroit, MI (US);
James H. Miller, Ortonville, MI (US);
Matt Gilmer, Whitmore Lake, MI (US);
Andrew Niedert, New Hudson, MI (US);
Dayco IP Holdings, LLC, Troy, MI (US);
Abstract
An aspirator for creating vacuum is disclosed that includes a housing defining a fluid passageway with a first tapering portion and a second tapering portion. Each tapering portion has a larger internal opening and a smaller internal opening, the smaller openings facing one another. The aspirator includes a gate positioned between and in fluid communication with the first and second tapering portions, the gate having a first Venturi tube with a Venturi opening creating vacuum when fluid flows in a direction and a second Venturi tube with a Venturi opening that creates vacuum when fluid flows in the opposite direction. The Venturi openings are in fluid communication with a suction port, and the first and second Venturi tubes may provide different mass flow rates through the aspirator. An engine system having an aspirator with a gate having a first bore and a second bore and an actuator is also disclosed.