Friction rotor for the false-twisting of synthetic threads
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United States of America Patent
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-
Aug 26, 1986
Grant Date -
N/A
app pub date -
Nov 8, 1985
filing date -
Dec 22, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The friction ring of a rotor or disk for a friction false-twisting device for synthetic threads is disposed on the circumference of the respective rotor. The friction ring is comprised of elastic material and is capable of lifting off the rotor upon high rotor rotation speed. To prevent lift-off, at least one annular element is disposed to the ring. In one embodiment, the annular element is rigid and is disposed in a groove around the periphery of the ring. In another embodiment, rigid annular elements are disposed in respective grooves in one or both side faces of the ring. In still another embodiment, the annular element is disposed inside the ring and may even comprise an initially tensioned spring, rather than a rigid annular element.
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