Noise attenuation in a Venturi device and/or check valves

US10519984B2 · kind B2 · utility

Assignee

• DAYCO IP HOLDINGS, LLC · US

Inventors

• David E. Fletcher · Flint, US
• James H. Miller · Ortonville, US
• Rex Bravo · Detroit, US
• Andrew Niedert · Farmington Hills, US
• Matthew C. Gilmer · South Lyon, US
• Keith Hampton · Ann Arbor, US
• Nicole Bruder · Harrison, US

Key dates

• Filing date: Jun 5, 2015
• Grant date: Dec 31, 2019
• Expiry date: Jun 15, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7904
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

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.