EP 0652312 B1 19980923 - Device for the positive modulated braking of thread for weft feeders
Title (en)
Device for the positive modulated braking of thread for weft feeders
Title (de)
Positiv modulierte Fadenbremse für Schussfadenliefervorrichtungen
Title (fr)
Frein de fil modulé positivement pour fournisseurs de trame
Publication
Application
Priority
IT TO930828 A 19931105
Abstract (en)
[origin: EP0652312A1] The device comprises a frustum-shaped braking body (12) that has a continuous circular shape and is supported in front of, and coaxially to, the drum (T) of the feeder (10) in order to engage the thread (F) that runs between the braking body and the drum. The braking body (12) is subjected to the electrodynamic action produced by a modulated energization current (I) that circulates in an energization coil (17) that is rigidly coupled to the braking body and interacts with the field of a permanent magnet. The energization coil (17) is arranged on the frustum-shaped braking body (12) at the region of tangent contact with the drum (T), and the magnetic interaction field is produced by an annular magnet (18) which is substantially toroidal and is arranged so as to face the coil (17) at the outer face or at the inner face of the frustum-shaped braking body (12). <IMAGE>
IPC 1-7
IPC 8 full level
B65H 51/22 (2006.01); D03D 47/34 (2006.01); D03D 47/36 (2006.01)
CPC (source: EP)
D03D 47/34 (2013.01); D03D 47/366 (2013.01); B65H 2555/13 (2013.01)
Designated contracting state (EPC)
DE SE
DOCDB simple family (publication)
EP 0652312 A1 19950510; EP 0652312 B1 19980923; DE 69413496 D1 19981029; DE 69413496 T2 19990610; IT 1261331 B 19960514; IT TO930828 A0 19931105; IT TO930828 A1 19950505
DOCDB simple family (application)
EP 94117189 A 19941031; DE 69413496 T 19941031; IT TO930828 A 19931105