TUBE PUMP
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Apr 26, 2012
app pub date -
Oct 21, 2011
filing date -
Oct 22, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
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
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
NIDEC SERVO CORPORATION | 3-93 AIOI-CHO KIRYU-SHI GUMMA 376-0011 |
International Classification(s)

- 2011 Application Filing Year
- F04B Class
- 879 Applications Filed
- 689 Patents Issued To-Date
- 78.39 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
HANAZUKA, Akira | Gumma, JP | 3 | 29 |
# of filed Patents : 3 Total Citations : 29 | |||
KAGAWA, Yoshihisa | Gumma, JP | 54 | 701 |
# of filed Patents : 54 Total Citations : 701 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 15 Citation Count
- F04B Class
- 75.05 % this patent is cited more than
- 13 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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