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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Apr 3, 2009
filing date -
Apr 8, 2008
priority date (Note) -
Published
status (Latency Note)
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Abstract
A magnetic filter device and method for using same, for removing ferromagnetic particles from a liquid, which device comprises a vessel having an inlet for liquid to flow into the vessel and an outlet for the liquid to flow out of the vessel, and the vessel having one or more magnets suspended therein for removing ferromagnetic particles from liquid flowing between the inlet and outlet, characterised in that: the vessel is a horizontal pipe with the inlet at one end and the outlet at the other end, the magnets are suspended transverse to the longitudinal axis of the pipe in one or more sets, and the vessel has one or more helical flow generators which in use, generate helical flow of the liquid as it flows between the inlet and outlet, and/or one or more turbulent flow generators which in use, generate turbulent flow of the liquid as it flows between the inlet and outlet. The helical and/or turbulent flow of the liquid may mitigate the potential problems of liquid and/or particles by-passing the magnet or magnets, for example arising from laminar flow of the liquid and/or uneven distribution of particles in the liquid.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
BP OIL INTERNATIONAL LIMITED | 1 FINSBURY CIRCUS LONDON EC2M 7BA |
International Classification(s)

- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Clark, Alisdair Quentin | Surrey, GB | 14 | 355 |
Middleton, Ricci | Surrey, GB | 1 | 0 |
Pugh, Peter Robert William | Surrey, GB | 2 | 1 |
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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 |
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