EP 0723522 B1 19971217 - DEVICE FOR THE SUSPENSION GUIDANCE OF A TRAVELLING WEB
Title (en)
DEVICE FOR THE SUSPENSION GUIDANCE OF A TRAVELLING WEB
Title (de)
VORRICHTUNG ZUM SCHWEBENDFÜHREN EINER LAUFENDEN BAHN
Title (fr)
DISPOSITIF POUR LE GUIDAGE EN SUSPENSION DANS L'AIR D'UNE BANDE EN DEFILEMENT
Publication
Application
Priority
- DE 9401166 W 19941006
- DE 4334473 A 19931011
Abstract (en)
[origin: US6502735B1] A device (100) for the suspension guidance of a travelling paper or paper-like web (B) by air and which is especially useful for deflecting a damp travelling paper web. The device has a plurality of air ducts (13) extending over the width of the web and bounded by wall surfaces (14). Each air duct (13) has a nozzle arrangement (22,22') communicating with a pressure chamber (10) to which compressed air is applied. In the air ducts (13) there are also air inlet apertures (26) which are not in fluid connection with the pressure chamber (10) but communicate through an intake duct (27) with an intake chamber (17) in which ambient pressure prevails and which has an inlet (19) for the fluid. Additional inlets (26) convey an additional quantity of air into each of the air ducts owing to the injector effect of the compressed air flowing into the air duct, thus preventing the web from forming a curvature transverse to the direction of its movement corresponding to the air duct cross-section and reducing the power consumption of the device by some 25% as compared with conventional suspension guidance devices.
IPC 1-7
IPC 8 full level
B65H 23/24 (2006.01); B65H 23/32 (2006.01); D21F 5/18 (2006.01); F26B 13/10 (2006.01); F26B 13/20 (2006.01)
CPC (source: EP US)
B65H 23/24 (2013.01 - EP US); B65H 23/32 (2013.01 - EP US); D21F 5/188 (2013.01 - EP US); F26B 13/104 (2013.01 - EP US); B65H 2406/111 (2013.01 - EP US); B65H 2406/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT DE FR GB IT SE
DOCDB simple family (publication)
US 6502735 B1 20030107; AT E161239 T1 19980115; DE 4334473 A1 19950413; DE 4334473 C2 19970703; DE 59404839 D1 19980129; EP 0723522 A1 19960731; EP 0723522 B1 19971217; FI 117333 B 20060915; FI 961572 A0 19960410; FI 961572 A 19960410; WO 9510473 A1 19950420
DOCDB simple family (application)
US 62461096 A 19960521; AT 94928287 T 19941006; DE 4334473 A 19931011; DE 59404839 T 19941006; DE 9401166 W 19941006; EP 94928287 A 19941006; FI 961572 A 19960410