Global Patent Index - EP 1070850 A1

EP 1070850 A1 2001-01-24 - Rotary impeller

Title (en)

Rotary impeller

Title (de)

Laufrad

Title (fr)

Roue

Publication

EP 1070850 A1 (EN)

Application

EP 00200996 A

Priority

IL 13106099 A

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 (main, further and additional classification)

F04D 29/36; F04D 29/24; F04D 29/26

IPC 8 full level (invention and additional information)

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

CPC (invention and additional information)

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

Citation (applicant)

None

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 1070850 A1 20010124; IL 131060 D0 20010128

INPADOC legal status


2003-04-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021001

2001-10-10 [AKX] PAYMENT OF DESIGNATION FEES

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

2001-09-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010720

2001-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2001-01-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI