The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 1986
Filed:
Nov. 08, 1985
Friedrich Schuster, Hammelburg, DE;
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.