Winding spool for ribbonlike or filamentary material
AssigneeHafner & Krullmann GmbH
InventorManfred Hafner
Life of this patent
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Abstract
A winding spool for ribbonlike or filamentary winding material includes a cylindrical mandrel which is provided at each axial end with a disk-like rim. Arranged concentrically inside the mandrel is a tubular inner hub which is connected in one piece with the mandrel at one axial end thereof. The other axial end of the mandrel is closed by a cover which is provided with a central bore for attachment of a mandrel drive shaft of a winding machine. An inner tubular member with smooth inside surface is fixedly secured to the cover in elongation of the central bore and to the inner hub for improving integrity of the winding spool when being subjected to extreme loads during winding or unwinding of the material.
Claims14
A winding spool for ribbonlike or filamentary winding material;
- comprising:
- a cylindrical mandrel defining an axis and being provided at each axial end with a disk-like rim;
- a tubular inner hub arranged concentrically to said axis and connected at one axial end of said mandrel;
- a cover secured to the other axial end of said mandrel in opposition to said hub;
- and
- an inner tubular member with smooth inside surface and fixedly secured to said cover and said inner hub,
- wherein said mandrel is extended beyond said cover-near rim by a stub, said cover including an edge overlapping said stub of said mandrel.
Dependencies are inferred from the claim text.