Fuel spray nozzle for a gas turbine engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Nov 25, 2014
filing date -
Dec 10, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Nozzle for engine has coaxial arrangement of inner pilot and outer mains airblast fuel injectors and intermediate air-swirler passage sandwiched between the outer and inner air-swirler passages of the pilot and mains airblast fuel injectors, respectively. The nozzle has an annular first-splitter wall separating the pilot outer air-swirler passage from the intermediate one. An outer surface profile of the first-splitter wall defines radially inner side of the intermediate air-swirler passage. The nozzle has an annular second-splitter wall separating the intermediate air-swirler passage from mains inner air-swirler passage. An inner surface profile of second-splitter wall defines radially outer side of intermediate air-swirler passage. The outer and inner surface profile of the first and second splitters walls, respectively, have convergent sections facing each other forming convergent portion of the intermediate air-swirler passage. The inner surface profile of the second-splitter wall has a divergent section downstream of its convergent section.
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 | |
---|---|---|
ROLLS-ROYCE PLC | 62 BUCKINGHAM GATE LONDON SW1E 6AT |
International Classification(s)

- 2014 Application Filing Year
- F23R Class
- 423 Applications Filed
- 330 Patents Issued To-Date
- 78.02 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hicks, Robert Anthony | Derby, GB | 3 | 29 |
# of filed Patents : 3 Total Citations : 29 | |||
Toon, Ian James | Leicester, GB | 8 | 58 |
# of filed Patents : 8 Total Citations : 58 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 5 Citation Count
- F23R Class
- 12.28 % this patent is cited more than
- 7 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 13, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 13, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
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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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Legal Events
Date | Code | Event | Description |
---|---|---|---|
Aug 31, 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 |
Mar 13, 2018 | I | Issuance | |
Mar 13, 2018 | PD | Priority Date | |
Feb 21, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jun 11, 2015 | P | Published | |
Nov 25, 2014 | F | Filing | |
Nov 25, 2014 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TOON, IAN JAMES;HICKS, ROBERT ANTHONY;SIGNING DATES FROM 20141030 TO 20141031;REEL/FRAME:034264/0180 Owner name: ROLLS-ROYCE PLC, GREAT BRITAIN |

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