EP 1801422 A3 20091014 - Fan and fan blade
Title (en)
Fan and fan blade
Title (de)
Ventilator und Ventilatorflügel
Title (fr)
Ventilateur et aube de ventilateur
Publication
Application
Priority
- EP 05028264 A 20051222
- EP 06003819 A 20060224
Abstract (en)
[origin: EP1801422A2] The fan blade (1) has a leading edge (2) which is curved in an S shape in the plane of the fan blade, and an outside edge (4) which is shorter than the leading edge. The center point (M) of the outside edge is located near to the radial line (x) of the fan blade. The leading edge may be at least partially fringed. An independent claim is included for a fan.
IPC 8 full level
F04D 29/32 (2006.01); F04D 29/38 (2006.01); F04D 29/68 (2006.01)
CPC (source: EP US)
F04D 29/325 (2013.01 - US); F04D 29/384 (2013.01 - EP US); F04D 29/681 (2013.01 - EP US); F05D 2240/304 (2013.01 - EP)
Citation (search report)
- [XY] DE 7139398 U 19720531
- [Y] DE 2529541 A1 19760122 - ROTRON INC
- [Y] US 2003095864 A1 20030522 - IVANOVIC BORISLAV [US]
- [Y] DE 102004017727 A1 20041104 - EBM PAPST ST GEORGEN GMBH & CO [DE]
- [Y] EP 1577562 A2 20050921 - HALLA CLIMATE CONTROL CORP [KR]
- [Y] US 2382535 A 19450814 - BAUER NORMAN T
- [Y] GB 2291134 A 19960117 - NUAIRE LTD [GB]
- [X] EP 0992693 A1 20000412 - GATE SPA [IT]
- [Y] HOWE M S: "Aerodynamic noise of a serrated trailing edge", JOURNAL OF FLUIDS AND STRUCTURES, ACADEMIC PRESS, vol. 5, 1 January 1991 (1991-01-01), pages 33 - 45, XP003024861, ISSN: 0889-9746
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1801422 A2 20070627; EP 1801422 A3 20091014; EP 1801422 B1 20130612; US 2007201982 A1 20070830
DOCDB simple family (application)
EP 06003819 A 20060224; US 61459806 A 20061221