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:
Dec. 31, 2019
Filed:
Jun. 05, 2015
David E. Fletcher, Flint, MI (US);
James H. Miller, Ortonville, MI (US);
Rex Bravo, Farmington, MI (US);
Andrew D. Niedert, New Hudson, MI (US);
Matthew C. Gilmer, Whitmore Lake, MI (US);
Keith Hampton, Ann Arbor, MI (US);
Nicole Bruder, Harrison Township, MI (US);
David E. Fletcher, Flint, MI (US);
James H. Miller, Ortonville, MI (US);
Rex Bravo, Farmington, MI (US);
Andrew D. Niedert, New Hudson, MI (US);
Matthew C. Gilmer, Whitmore Lake, MI (US);
Keith Hampton, Ann Arbor, MI (US);
Nicole Bruder, Harrison Township, MI (US);
Dayco IP Holdings, LLC, Troy, MI (US);
Abstract
Venturi devices for producing vacuum are disclosed that include a housing defining a motive port, a suction port, a discharge port, a first flow passage between the motive port and the discharge port, and a second flow passage into and through the suction port and into fluid communication with the first flow passage, a first check valve incorporated into the housing and positioned to control fluid flow through the suction port, and a sound attenuating wrap about the outer surface of the housing. The Venturi devices may also include a sound attenuating member disposed in the first flow passage downstream of the intersection of the second flow passage and the first flow passage, in the portion of the second flow passage leading into the suction port, in the first check valve, or combinations thereof.