Global Patent Index - EP 1070850 A1

EP 1070850 A1 20010124 - Rotary impeller

Title (en)

Rotary impeller

Title (de)

Laufrad

Title (fr)

Roue

Publication

EP 1070850 A1 20010124 (EN)

Application

EP 00200996 A 20000320

Priority

IL 13106099 A 19990723

Abstract (en)

A rotary impeller for fluids, in particular for use with self-propelled cleaning devices which are able to work in both forward and backward directions, having improved efficiency comprises a shaft (2) connectable to a motor (4) and having a headpiece (6) at its free end from which extend substantially radially at least two arms (10). An impeller blade (12) pivotally mounted on each arm has first and second major surfaces (20,20'). Two stops (14) for each impeller blade (12) are stationary relative to the headpiece (16) and define two limit positions between which each impeller blade is allowed to swivel about its arm (10). In use when the motor (4) rotates in one direction, the first impeller blade major surface (20) becomes the leading surface, and when the motor (4) changes its direction of rotation, fluid resistance causes the blades (12) to flip over from one limit position to the second limit position with the second major surface (20') becoming the leading surface. <IMAGE>

IPC 1-7

F04D 29/36; F04D 29/24; F04D 29/26

IPC 8 full level

F04D 29/24 (2006.01); F04D 29/26 (2006.01); F04D 29/36 (2006.01)

CPC (source: EP)

F04D 29/247 (2013.01); F04D 29/263 (2013.01); F04D 29/364 (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

DOCDB simple family (publication)

EP 1070850 A1 20010124; IL 131060 A0 20010128

DOCDB simple family (application)

EP 00200996 A 20000320; IL 13106099 A 19990723