TUBE PUMP

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20120100023A1
SERIAL NO

13278407

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A tube pump capable that prevents and minimizes torque variation in a drive motor regardless of the rotation direction of a rotor unit includes a casing in which a liquid-flowing tube is arranged; a drive motor provided with a driving shaft rotatable in forward and reverse directions; a rotor body; roller holders supported on the rotor body to swing with respect to the rotor body; pressing rollers rotatably supported on the roller holders to press the tube against an inner circumferential wall surface of the casing; and biasing units biasing the roller holders, when swung, to be returned to a pre-swing position. The roller holders are configured to swing with respect to the rotor body in a direction opposite to a rotation direction of the rotor body.

First Claim

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Patent Owner(s)

Patent OwnerAddress
NIDEC SERVO CORPORATION3-93 AIOI-CHO KIRYU-SHI GUMMA 376-0011

International Classification(s)

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  • 2011 Application Filing Year
  • F04B Class
  • 879 Applications Filed
  • 689 Patents Issued To-Date
  • 78.39 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2011201220132014201520162017201820192020202120220255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
HANAZUKA, Akira Gumma, JP 3 29
KAGAWA, Yoshihisa Gumma, JP 54 701

Cited Art Landscape

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Patent Citation Ranking

  • 15 Citation Count
  • F04B Class
  • 75.05 % this patent is cited more than
  • 13 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges233328521541201 - 1011 - 2021 - 3031 - 4041 - 5091 - 100100 +020406080100120140160180200220240260280300320340360

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