Expansion chamber for a brake boost vacuum pump

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United States of America Patent

PATENT NO 10662948
APP PUB NO 20180355870A1
SERIAL NO

15981386

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An expansion chamber for a rotary vane vacuum pump is provided. The expansion chamber is in fluid communication with the discharge side of the rotary vane vacuum pump, such that the expansion chamber attenuates sound as a Helmholtz resonator. The expansion chamber includes an internal volume of between 80 cubic centimeters and 100 cubic centimeters, inclusive, and includes a curved sidewall that extends partially around, and generally conforms to, the exterior of the rotary vane vacuum pump. The expansion chamber also includes a downward extending port, open to the atmosphere, for attachment to a hose in applications in which the expansion chamber is below a water line.

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Patent Owner(s)

  • HELLA GMBH & CO. KGAA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Athipatla, Harish Chowdhary Livonia, US 1 0
Gonzalez, Archie Villareal Livonia, US 1 0

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