(19)
(11) EP 1 469 109 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.03.2005 Bulletin 2005/12

(43) Date of publication A2:
20.10.2004 Bulletin 2004/43

(21) Application number: 04100257.7

(22) Date of filing: 26.01.2004
(51) International Patent Classification (IPC)7: D03D 51/00
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 18.04.2003 IT MI20030817

(71) Applicant: Promatech S.p.A.
24020 Colzate (Bergamo) (IT)

(72) Inventors:
  • Franchina, Gian Luigi
    24023 Clusone (Bergamo) (IT)
  • Belingheri, Maurizio
    24020 Villa di Serio (Bergamo) (IT)

(74) Representative: Faggioni, Carlo Maria, Dr. Ing. et al
Fumero Studio Consulenza Brevetti Snc Pettenkoferstrasse 20-22
80336 Munich
80336 Munich (DE)

   


(54) Slow-gear and pick-finding clutch having an improved magnetic flux and manufacturing method therefor


(57) A slow-gear selection and pick-finding clutch device in a weaving loom and method therefor is disclosed, of the type comprising a stator (1) integral with the loom and a flange (2) fixed to a driven shaft, equipped with opposing, flat bevelled toothing, between which a disc (3) is located integral with the loom main shaft, provided with corresponding flat bevelled toothing, translatable from a coupling position to said stator (1) to a coupling position to said flange (2), said disc being displaceable under the action of a magnetic force developed by a solenoid (E) integral with said stator (1), at the toothing (1a) of said stator (1) a flat circumferential surface (1a') being provided, so as to define, together with a flattened area (3a') in the corresponding toothing (3a) of said disc (3), at least a pair of flat coupling surfaces (1a', 3a'') intended to come into contact when the solenoid (E) is energised.






Search report