Fluid filter comprising a protected liquid sensor
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United States of America Patent
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Oct 28, 2014
Issued Date -
N/A
app pub date -
Feb 5, 2007
filing date -
Feb 6, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a fluid filter (1) comprising a collecting chamber (10) for a liquid which is separated from the fluid, in addition to a filter insert (4) which comprises a filter medium which is permeable to the fluid. The collecting chamber is arranged below the filter medium (5), and a liquid sensor (19) is arranged above the deepest point of the collecting chamber (10) and the liquid sensor (19) is protected from the liquid, at least sectionally, by means of a protective wall (18, 20). Said protective wall (18, 20) extends laterally and/or below the liquid sensor (19) and a liquid permeable connection is provided from the collecting chamber (10) to the fluid sensor (19). The invention is characterized in that the permeable connection extends in a labyrinth like manner such that the fluid flowing through said connection changes direction a plurality of times, the liquid permeable connection allows the fluid to flow in a radial manner from the collecting chamber (10), which surrounds the protective wall, to the liquid sensor. Said liquid sensor is separated from the collecting chamber in the radial direction by at least two protective walls (18, 20), wherein in the radially internal protective wall, the closest to the liquid sensor, a through opening (25) which is as high as or higher than the liquid sensor (19) is provided, and a through opening (25) having the same height or higher than the liquid sensor is provided in at least one protective wall (18) which is arranged in a radial manner further to the outside.

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 | |
---|---|---|
HENGST GMBH & CO KG | 48147 MÜNSTER |
International Classification(s)

- [Classification Symbol]
- [Patents Count]
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Eberle, Richard | Muenster, DE | 22 | 87 |
Kubsch, Burkhard | Horstmar, DE | 1 | 6 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 28, 2026 |
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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