Device for the slip-free coupling of a drive shaft to a winding sleeve

Claim 3

A device as claimed in claim 1 wherein said casing in cross section has the shape of a regular polygon and said arcuate cogs are spaced equidistantly around the circumference of said collar with each cog projecting radially into one angle of said polygon.

Claim 4

A device as claimed in claim 2 wherein said casing in cross section has the shape of a pentagon.

Claim 5

A device as claimed in claim 1 wherein said collar and casing when taken together in the rest position provide a substantially cylindrical outer surface with the casing fitting with a small tolerance over the collar.

Claim 6

A device as claimed in claim 1 wherein said collar and casing when taken together in the rest position provide a slightly tapering outer surface in the axial direction toward the winding sleeve to be engaged thereon,

Claim 7

A device as claimed in claim 1 wherein said collar contains outwardly projecting flange means at either end of the resilient casing to hold said casing in a stationary axial position.

Claim 8

In an apparatus for the takeup winding of threads or foils into a multiwound package on a spool having a hollow cylindrical winding sleeve, the improvement which comprises: a drive shaft; means to rotate said shaft; and radially resilient gear locking means connected to said shaft and adapted to frictionally engage the inner cylindrical surface of said winding sleeve under a bearing pressure proportional to the amount of countertorque created by the load of the multiwound package on said spool, said gear locking means consisting essentially of a rigid collar fastened firmly to the drive shaft while having on its periphery n cam-shaped protuberances, and a hollow tubular casing composed of a resilient elastomeric material which fits with a slight clearance over said collar and which has a circular outer profile while its inner profile is in the form of an n-angled polygon, n corresponding to the number of said cam-shaped protuberances which have the same center angle as the angles of said n-angled polygon.

Claim 9

In an apparatus for the takeup winding of threads or foils into a multiwound package on a spool having a hollow cylindrical winding sleeve, the improvement which comprises: a drive shaft; means to rotate said shaft; and radially resilient gear locking means connected to said shaft and adapted to frictionally engage the inner cylindrical surface of said winding sleeve under a bearing pressure proportional to the amount of countertorque created by the load of the multiwound package on said spool, said gear locking means consisting essentially of a rigid collar fastened firmly to the drive shaft while having on its periphery n cam-shaped protuberances, and a hollow tubular casing composed of a resilient elastomeric material which fits with a slight clearance over said collar and which has a circular outer profile while its inner profile is in the form of an n-angled polygon, n corresponding to the number of said cam-shaped protuberances which have the same center angle as the angles of said n-angled polygon.

Claim 10

An apparatus as claimed in claim 7 wherein said cam-shaped protuberances are uniformly spaced aroUnd the periphery of the collar and the n-angled polygon is a regular polygon.

Claim 11

An apparatus as claimed in claim 8 wherein said polygon is a pentagon where n 5. An apparatus as claimed in claim 7 wherein said collar and said casing when taken together in the rest position provide a slightly tapering outer circumferential surface in the axial direction toward the winding sleeve to be engaged thereon with flange means on said collar at either end of said casing to hold the casing in a stationary axial position.