Installation for distributing pulverulent substance by pneumatic transportation, comprising a device for depressurizing a pressurized reservoir in which said substance is stored
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 3, 2020
Grant Date -
Jul 23, 2015
app pub date -
Jul 3, 2013
filing date -
Jul 6, 2012
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
An installation for distribution of granular or powder material via pneumatic transport comprising at least one dispensing hopper (3) for temporary storage of said granular or powder material, the dispensing hopper being suited to being, alternately, pressurized for emptying the dispensing hopper and depressurized to permit filling thereof, and a device for depressurizing said dispensing hopper. The depressurizing device comprises a depressurizing duct (12) connected to said dispensing hopper, a bag filter (11), having a maximum operating flow rate, connected to the depressurizing duct, and flow control means (15) for controlling the flow rate in said depressurizing duct through the bag filter. The bag filter (11) is suited to operating under pressure, and the flow control means (15) are located on the depressurizing duct (12) downstream of the bag filter (11) and are arranged to provide a flow rate which is at most equal to the maximum flow rate of the bag filter. Application in particular to an installation for injecting coal into a blast furnace.
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 | |
---|---|---|
PAUL WURTH S A | 1122 LUXEMBOURG |
International Classification(s)

- 2013 Application Filing Year
- F27B Class
- 185 Applications Filed
- 169 Patents Issued To-Date
- 91.36 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mahowald, Pierre | Mamer, LU | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 | |||
Muller, Ben | Strassen, LU | 5 | 19 |
# of filed Patents : 5 Total Citations : 19 | |||
Schmit, Louis | Luxembourg, LU | 17 | 87 |
# of filed Patents : 17 Total Citations : 87 |
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Patent Citation Ranking
- 0 Citation Count
- F27B Class
- 0 % this patent is cited more than
- 5 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 3, 2028 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 3, 2032 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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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