EP 0115005 B1 19860716 - AXIAL FAN WITH BLADES ADJUSTING THEMSELVES TO THE DIRECTION OF ROTATION
Title (en)
AXIAL FAN WITH BLADES ADJUSTING THEMSELVES TO THE DIRECTION OF ROTATION
Publication
Application
Priority
DE 3248760 A 19821231
Abstract (en)
[origin: US4515511A] The invention relates to an axial fan with blades that automatically adjust to the direction of rotation. The fan blades are mounted with freedom to swivel on the fan wheel and are limited in their swiveling motion by stops which are provided on the fan wheel. In order to reduce the manufacturing cost of such an axial fan, spokes, to which the fan blades are fastened by means of film hinges are mounted on the fan wheel. The fan wheel is made from a single piece of plastic.
IPC 1-7
IPC 8 full level
F04D 29/36 (2006.01)
CPC (source: EP US)
F04D 29/36 (2013.01 - EP US); F04D 29/366 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0115005 A1 19840808; EP 0115005 B1 19860716; AT E20767 T1 19860815; DE 3248760 A1 19840712; DE 3248760 C2 19841031; DE 3364548 D1 19860821; US 4515511 A 19850507
DOCDB simple family (application)
EP 83112707 A 19831216; AT 83112707 T 19831216; DE 3248760 A 19821231; DE 3364548 T 19831216; US 54320983 A 19831019