Rotary furnace burner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 28, 2013
Grant Date -
Sep 4, 2008
app pub date -
Nov 8, 2006
filing date -
Nov 11, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A rotary kiln burner particularly for fine-grained solid fuels such as coal dust, with jet air nozzles which can be adjusted easily and effectively during operation of the kiln in order to change the divergence angle of the high-speed jet air streams to change the flame shape and optimize the combustion. The jet air nozzles are attached with the nozzle openings divergent to the burner axis at the end of jet air pipes. The nozzle openings are arranged around the burner axis, with the axes parallel, with the jet air pipes arranged inside an annular cooling air space surrounding the coal dust channel and enclosed on the outside by the burner housing pipe. The nozzle openings are mounted so that they can rotate around the jet air pipe axes, so that on turning the jet air pipes at the cold end of the burner lance, the divergence of the high-speed jet air streams, and thus the angle of the jet air flow angle of the jet air flow cone angle of the jet air flow cone in relation to the coal dust cone, can be changed and adjusted.
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 | |
---|---|---|
KHD HUMBOLDT WEDAG GMBH | COLOGNE GERMANY COLOGNE NORTH RHINE-WESTPHALIA |
International Classification(s)

- 2006 Application Filing Year
- F23C Class
- 51 Applications Filed
- 30 Patents Issued To-Date
- 58.83 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kluthe, Karin | Brühl, DE | 3 | 5 |
# of filed Patents : 3 Total Citations : 5 | |||
Knoch, Alexander | Lohmar, DE | 5 | 13 |
# of filed Patents : 5 Total Citations : 13 | |||
Loggia, Giovanni | Köln, DE | 3 | 5 |
# of filed Patents : 3 Total Citations : 5 | |||
Schröder, Ernst | Büllingen, BE | 2 | 8 |
# of filed Patents : 2 Total Citations : 8 | |||
Wenzel, Wilhelm | Seigburg, DE | 2 | 21 |
# of filed Patents : 2 Total Citations : 21 |
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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 | Nov 28, 2024 |
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 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Mar 06, 2025 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Mar 16, 2021 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Sep 19, 2017 | I | Issuance | |
Aug 30, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Mar 07, 2013 | P | Published | |
Nov 21, 2012 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BAYER, ERWIN;HUTTNER, ROLAND;SIGNING DATES FROM 20120927 TO 20121010;REEL/FRAME:029337/0414 Owner name: MTU AERO ENGINES GMBH, GERMANY |
Apr 06, 2011 | F | Filing | |
Apr 08, 2010 | PD | Priority Date |

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