B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
242/49.1
B65H 63/00 (2006.01) B65H 59/04 (2006.01) B65H 75/30 (2006.01) D07B 7/06 (2006.01)
Patent
CA 1318304
SPOOL DRIVING AND BRAKING ABSTRACT OF THE DISCLOSURE In combination with a spool upon which elongated stock such as ribbon, wire, thread etc is to be wound and from which the elongated stock is to be unwound; and electromagnet with cooperating armature and a yoke; the device is to be selectively used as a brake and as clutch. This is accomplished by a permanent air gap from 0.1 to 1.5 mm between the yoke and the armature to remain effective in the energized state such that on application of a relatively high voltage to the electromagnet positive coupling obtains between the magnet and the armature and therefore between a shaft connected to the magnet and the armature as being connected to the spool; for positive common rotation while upon application of a lower voltage to the electromagnet a brake force becomes effective between the electromagnet on one hand and the armature and the spool on the other hand.
596206
Bruenn Rainer
Heisterhagen Rolf
Klebl Wolfram
Staschewski Harry
Kabelmetal Electro Gmbh
Smart & Biggar
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