Global Patent Index - EP 0936357 A3

EP 0936357 A3 2001-01-10 - Compressor bleed valve

Title (en)

Compressor bleed valve

Title (de)

Verdichterabblasventil

Title (fr)

Soupape de soutirage d' un compresseur

Publication

EP 0936357 A3 (EN)

Application

EP 99301044 A

Priority

  • CA 2229352 A
  • US 2321798 A

Abstract (en)

[origin: EP0936357A2] A bleed valve 110 is in fluid communication with the compressor fluid flow path and the bypass fluid flow path 112 whereby a piston 126 extends radially of the valve 110 and includes a piston head 134 radially remote from the compressor fluid flow path. A pneumatic chamber 132 surrounds a portion of the piston head 134, and air from a source downstream of the impeller is introduced into the chamber. The piston including a valving member 136 and a rigid sleeve 130 connecting the piston head 134 to the valving means opens or closes the communication between the compressor flow path and the bypass flow path 112. A precompressed spring 144 is associated with the piston to normally urge the piston 120 radially outwardly relative to the compressor fluid flow path to a valve open position, and when the pneumatic pressure in the chamber surrounding the piston head overcomes the precompressed spring, the valve is closed. <IMAGE>

IPC 1-7 (main, further and additional classification)

F04D 27/02; F01D 17/10

IPC 8 full level (invention and additional information)

F01D 25/24 (2006.01); F01D 17/10 (2006.01); F02C 7/00 (2006.01); F02C 9/18 (2006.01); F02K 3/06 (2006.01); F04D 27/02 (2006.01)

CPC (invention and additional information)

F01D 17/105 (2013.01); F04D 27/0215 (2013.01); F04D 27/023 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0936357 A2 19990818; EP 0936357 A3 20010110; EP 0936357 B1 20031105; DE 69912488 D1 20031211; DE 69912488 T2 20040812; JP H11287133 A 19991019

INPADOC legal status


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2004-10-27 [26N] NO OPPOSITION FILED

- Effective date: 20040806

2004-07-09 [ET] FR: TRANSLATION FILED

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2003-12-11 [REF] CORRESPONDS TO:

- Document: DE 69912488 P 20031211

2003-11-05 [AK] DESIGNATED CONTRACTING STATES:

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2003-11-05 [REG GB FG4D] EUROPEAN PATENT GRANTED

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2003-05-14 [RTI1] TITLE (CORRECTION)

- Free text: GAS TURBINE ENGINE

2002-11-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020923

2001-09-26 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR GB IT SE

2001-04-04 [17P] REQUEST FOR EXAMINATION FILED

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2001-01-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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2000-08-23 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: PRATT & WHITNEY CANADA CORP.

1999-08-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB IT SE

1999-08-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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