Axial fan

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9890798
SERIAL NO

14063674

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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There is provided with an axial fan comprising an impeller having a plurality of vanes; a motor rotating the impeller; a casing housing the impeller and the motor; a motor base mounting the motor; and a plurality of spokes connecting the motor base and the casing, wherein the motor base has a plurality of reinforcement ribs thereon, the plurality of reinforcement ribs being equal to or more than the plurality of spokes in number, and wherein the casing has a natural frequency equal to or higher than a frequency being transmitted to the casing from the motor when the motor is rotated at a rotation speed of 20000 rpm or more.

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Patent Owner(s)

Patent OwnerAddress
MINEBEA MITSUMI INCNAGANO NAGANO

International Classification(s)

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  • 2013 Application Filing Year
  • F04D Class
  • 1063 Applications Filed
  • 941 Patents Issued To-Date
  • 88.53 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201320142015201620172018201920202021202220230255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishizawa, Masaaki Kitasaku-gun, JP 3 12
Nonaka, Tomoko Hamamatsu, JP 3 12
Oda, Yusuke Yokohama, JP 26 56
Uchikawa, Shinichi Kitasaku-gun, JP 37 154

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Patent Citation Ranking

  • 1 Citation Count
  • F04D Class
  • 30.09 % this patent is cited more than
  • 7 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges651455101 - 1011 - 2051 - 600102030405060708090100110120130140150160

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