Global Patent Index - EP 0440971 B1

EP 0440971 B1 19940413 - Control for the path of a web.

Title (en)

Control for the path of a web.

Title (de)

Vorrichtung zur Bahnlaufsteuerung.

Title (fr)

Réglage de la voie d'une feuille continue.

Publication

EP 0440971 B1 19940413 (DE)

Application

EP 90125211 A 19901221

Priority

DE 4003927 A 19900209

Abstract (en)

[origin: EP0440971A2] What is described is a device for controlling material webs, for example photographic films or paper webs or magnetic tapes, in a so-called two-roller hollow sucker, a pressure difference prevailing in the region of the pair of rollers between the topside and underside of the web, and, according to the invention, a packing wedge being so arranged in the free inner space (10) between the rollers (2, 3), starting from each of the roller outer edges, that it engages under the web edges (17) of the sagging web part (5), is matched to the cross-sectional shape of the rollers and is spaced slightly from the running surfaces of the rollers. In an especially preferred embodiment, the packing wedge is hollowed out in the form of a trough and extends transversely relative to the running direction, descending in the direction of the middle of the web. <IMAGE>

IPC 1-7

B65H 23/24

IPC 8 full level

B65H 20/10 (2006.01); B65H 23/24 (2006.01); G03G 15/00 (2006.01)

CPC (source: EP US)

B65H 23/24 (2013.01 - EP US); Y10S 277/927 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0440971 A2 19910814; EP 0440971 A3 19920219; EP 0440971 B1 19940413; DE 4003927 A1 19910814; DE 59005367 D1 19940519; JP 2925763 B2 19990728; JP H04213542 A 19920804; US 5176305 A 19930105

DOCDB simple family (application)

EP 90125211 A 19901221; DE 4003927 A 19900209; DE 59005367 T 19901221; JP 3345591 A 19910204; US 64583091 A 19910125