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US 6,293,083 B1Granted
Spinning rotor for an open-end spinning frame
AssigneeW. Schlafhorst AG & Co.
InventorHarald Schneider
Life of this patent
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AssigneeW. Schlafhorst AG & Co.
InventorHarald Schneider
Estimating the term…
A spinning rotor for an open-end spinning frame has a coating of a non-ferrous metal with hard material granules embedded therein, which is applied to the surface of the base material (12), in particular a nickel layer with diamond granules, wherein the coating is comprised of at least two layers (7, 10) containing hard material granules, and an intermediate layer (9) free of hard material granules between the layers (7, 10) containing hard material granules. In case of a separation in places of the wear protection layer, such as can be caused by a scraper in the course of cleaning the spinning rotor, wear protection and spinning properties at the damaged places of the spinning rotor are preserved. As a result, it is possible to prevent a considerable shortening of the service life of the spinning rotor.
A spinning rotor for an open-end spinning frame, the rotor having surfaces for contacting textile fibers being spun or a resultantly spun yarn, the surfaces having a coating comprised of at least two layers of a non-ferrous metal with hard material granules embedded therein, and an intermediate layer of a non-ferrous metal essentially free of hard material granules between the layers containing hard material granules.
Dependencies are inferred from the claim text.