NON-CONTACT LIQUID LEVEL SENSOR
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
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app pub date -
Nov 28, 2014
filing date -
Nov 28, 2013
priority date (Note) -
Published
status (Latency Note)
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Importance

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Abstract
The present invention provides a non-contact pulley liquid level sensor, comprising a float capable of floating up and down and floating on a liquid surface, a tether, at least one pulley, a permanent magnet and a magnetic field angle sensor, wherein two ends of the tether are tied to the float, and are wound on the top end pulley and the optional bottom end pulley, the permanent magnet is installed on one side of the top end pulley and rotates together with the top end pulley under the effect of a friction torque produced by the tether. The magnetic field angle sensor detects a magnetic field produced by the permanent magnet and converts a rotation angle of the magnetic field into a voltage signal, then according to a relationship between the rotation angle of the permanent magnet and a floating distance of the float, a liquid level height is calculated via the output voltage signal. A gear can also be used to calibrate the operating range and accuracy of the liquid level sensor. The liquid level sensor has the advantages of simple design, wide measurement range, easiness in sealing and the like.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MULTIDIMENSION TECHNOLOGY CO LTD | BUILDING E NO 7 GUANGDONG ROAD FREE TRADE ZONE ZHANGJIAGANG JIANGSU 215634 |
International Classification(s)

- 2014 Application Filing Year
- G01D Class
- 1132 Applications Filed
- 936 Patents Issued To-Date
- 82.69 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
DEAK, James Geza | Zhangjiagang, CN | 82 | 489 |
# of filed Patents : 82 Total Citations : 489 | |||
TONDRA, Mark C | Zhangjiagang, CN | 17 | 479 |
# of filed Patents : 17 Total Citations : 479 |
Cited Art Landscape
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Patent Citation Ranking
- 2 Citation Count
- G01D Class
- 19.19 % this patent is cited more than
- 8 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 12, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 |
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