EP 0298861 B1 19910515 - SCYTHE-SHAPED IMPELLER BLADE, AND ITS USE, ESPECIALLY IN MOTOR VEHICLE VENTILATORS
Title (en)
SCYTHE-SHAPED IMPELLER BLADE, AND ITS USE, ESPECIALLY IN MOTOR VEHICLE VENTILATORS
Publication
Application
Priority
FR 8709773 A 19870709
Abstract (en)
[origin: US4871298A] The blade (10) for a propeller constituted by a hub (20) to which the feet (12) are fixed has a leading edge (14) and a trailing edge (15) which is formed by two arcs (152, 153) having respective mean radii of curvature ( rho 2, rho 3) which are different and interconnected without an angular point. These edges are both curved in the downstream direction and define a blade which narrows from the axis to the periphery of the propeller. Application in propellers of motorized fans associated with automobile vehicles.
IPC 1-7
IPC 8 full level
F01P 5/02 (2006.01); F04D 29/38 (2006.01)
CPC (source: EP KR US)
F04D 29/32 (2013.01 - KR); F04D 29/384 (2013.01 - EP US)
Citation (examination)
EP 0294688 A1 19881214 - MAGNETI MARELLI SPA [IT]
Designated contracting state (EPC)
DE ES GB IT SE
DOCDB simple family (publication)
EP 0298861 A1 19890111; EP 0298861 B1 19910515; CA 1327553 C 19940308; DE 3862816 D1 19910620; ES 2022999 B3 19911216; FR 2617904 A1 19890113; FR 2617904 B1 19920522; JP H0227199 A 19900129; KR 890002559 A 19890410; US 4871298 A 19891003
DOCDB simple family (application)
EP 88401755 A 19880705; CA 571565 A 19880708; DE 3862816 T 19880705; ES 88401755 T 19880705; FR 8709773 A 19870709; JP 17170288 A 19880709; KR 880008507 A 19880708; US 21646188 A 19880708