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US 5,341,631 AGranted
Double-twisting device with magnetic device for elevating axial forces
AssigneeN. V. Bekaert S.A.
InventorsPeter Boesman, Marc Derdeyn
Life of this patent
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Abstract
A double-twisting device (2) includes two half-shafts (4) and at least one flyer (6). The flyer (6) connects the two half-shafts (4) and causes axial forces F.sub.a which are exerted upon the half shafts (4) during rotation. The double-twisting device (2) further includes a magnetic device (22, 24) which are suited to compensate at least partially for the axial forces F.sub.a. This increases the life span of the bearings (8) and considerably reduces the maintenance costs of the double-twisting device.
Claims8
A double-twisting device comprising:
- two rotatable half-shafts;
- at least one flyer connecting the two half-shafts and being rotatable therewith, wherein during rotation of the two half shafts the at least one flyer causes axial forces to be exerted on the two half-shafts;
- and
- magnetic means, operatively connected to at least one of the two rotatable half-shafts, for at least partially compensating for the axial forces.
1 more element
A double-twisting device comprising:
- first and second rotatable half-shafts;
- a flyer connecting said first half-shaft to said second half-shaft and being rotatable with said first and second half-shafts, the flyer causing first and second axial forces to be respectively exerted on said first and second half-shafts during rotating the first and second half-shafts;
- first and second discs being respectively fixedly mounted on said first and second half-shafts;
- and
- first and second magnets respectively disposed proximate to said first and second discs, said first and second magnets respectively attracting said first and second discs and respectively causing third and forth axial forces to be respectively exerted on said first and second half-shafts, said third axial force approximately negating said first axial force and said fourth axial force approximately negating said second axial force.
2 more elements
Dependencies are inferred from the claim text.