| (19) |
 |
|
(11) |
EP 1 111 194 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.01.2003 Bulletin 2003/01 |
| (43) |
Date of publication A2: |
|
27.06.2001 Bulletin 2001/26 |
| (22) |
Date of filing: 05.12.2000 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
23.12.1999 US 471758
|
| (71) |
Applicant: UNITED TECHNOLOGIES CORPORATION |
|
Hartford, CT 06101 (US) |
|
| (72) |
Inventors: |
|
- Putnam, John W.
Glastonbury, Connecticut 06033 (US)
- Watson, Charles R.
Windsor, Connecticut 06095 (US)
|
| (74) |
Representative: Leckey, David Herbert |
|
Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street
London EC4V 4EL
London EC4V 4EL (GB) |
|
| |
|
| (54) |
Composite abradable material |
(57) An abradable material for use at moderate temperatures which is particularly suited
for use in the compressor sections of gas turbine engines. Abradable seals of the
invention comprise an abradable silicone polymer matrix which contains a dispersion
of hard abradable organic filler particles.