Global Patent Index - EP 0955469 A3

EP 0955469 A3 2001-02-28 - Impeller of fan

Title (en)

Impeller of fan

Title (de)

Lüfterrad

Title (fr)

Roue de ventilateur

Publication

EP 0955469 A3 (EN)

Application

EP 99106357 A

Priority

JP 10234498 A

Abstract (en)

[origin: EP0955469A2] An impeller of a fan includes hub (3) mounted with plural blades (2). The fan blows air by spinning the blades. A revolution locus of a leading edge (6) of blade (2) shows a valley in a portion between around a center and tip (8) of blade (2), and shows a peak in a portion between around the center and hub (3), with regard to windward. A cross sectional view of blade (2) in a radial direction shows a valley in a portion between around a center and tip (8), and shows a peak in a portion between around the center of blade (2) and hub (3). This structure realizes to lower the noise level and to increase the static pressure. <IMAGE>

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

F04D 29/38

IPC 8 full level (invention and additional information)

F04D 29/38 (2006.01)

CPC (invention and additional information)

F04D 29/384 (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 0955469 A2 19991110; EP 0955469 A3 20010228; EP 0955469 B1 20041020; CN 1107808 C 20030507; CN 1232143 A 19991020; ES 2230759 T3 20050501; JP 3204208 B2 20010904; JP H11294389 A 19991026; MY 123252 A 20060531

INPADOC legal status


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2013-07-11 [REG ES FD2A] ANNOUNCEMENT OF LAPSE IN SPAIN

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2005-10-12 [26N] NO OPPOSITION FILED

- Effective date: 20050721

2005-05-01 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2230759 T3

2005-01-25 [REG GR EP] EP PATENT VALIDATED IN GREECE

- Document: GR 20040404215

2004-10-20 [AK] DESIGNATED CONTRACTING STATES:

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2001-08-08 [17P] REQUEST FOR EXAMINATION FILED

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2001-02-28 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-02-28 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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1999-11-10 [AK] DESIGNATED CONTRACTING STATES:

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1999-11-10 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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