公开(公告)号：US11174130B2

公开(公告)日：2021-11-16

申请号：US15999240

申请日：2017-02-14

Applicant: Inventio AG

Inventor： Volker Zapf ,  Sascha Hessel

IPC: B66B15/02 ,  C23C16/02 ,  C23C16/27 ,  C23C16/34 ,  C23C16/50 ,  C01B32/05 ,  C10N10/06 ,  C01B21/06

Abstract: A pulley for an elevator includes a base body made e.g. from steel and having a rotation-symmetrical circumferential surface. Additionally, a friction reducing coating is applied to the circumferential surface of the base body. Due to the friction reducing coating and, optionally, due to additionally smoothing the base body's circumferential surface before depositing the coating, a very low friction between an outside surface of the pulley and a contacting surface of a suspension traction member may be obtained. Thereby, guiding characteristics of the pulley may be improved and/or alignment requirements upon installation of the pulley may be relaxed. Preferably, the coating may comprise diamond-like carbon (DLC) or chromium nitride (CrN) such that the coating provides for superior wear resistance, slickness, corrosion protection and electrical characteristics.

公开(公告)号：US20190106294A1

公开(公告)日：2019-04-11

申请号：US15999240

申请日：2017-02-14

Applicant: Inventio AG

Inventor： Volker Zapf ,  Sascha Hessel

IPC: B66B15/02 ,  C23C16/50 ,  C23C16/02 ,  C23C16/27 ,  C23C16/34

Abstract: A pulley for an elevator includes a base body made e.g. from steel and having a rotation-symmetrical circumferential surface. Additionally, a friction reducing coating is applied to the circumferential surface of the base body. Due to the friction reducing coating and, optionally, due to additionally smoothing the base body's circumferential surface before depositing the coating, a very low friction between an outside surface of the pulley and a contacting surface of a suspension traction member may be obtained. Thereby, guiding characteristics of the pulley may be improved and/or alignment requirements upon installation of the pulley may be relaxed. Preferably, the coating may comprise diamond-like carbon (DLC) or chromium nitride (CrN) such that the coating provides for superior wear resistance, slickness, corrosion protection and electrical characteristics.