- Patent Title: Nano-crystalline coating for magnet retention in a rotor assembly
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Application No.: US15855956Application Date: 2017-12-27
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Publication No.: US10763715B2Publication Date: 2020-09-01
- Inventor: David Loder , Ellis Fui Hen Chong , Edward Claude Rice
- Applicant: Rolls-Royce North American Technologies, Inc. , Rolls-Royce PLC
- Applicant Address: US IN Indianapolis GB London
- Assignee: Rolls Royce North American Technologies, Inc.,Rolls Royce PLC
- Current Assignee: Rolls Royce North American Technologies, Inc.,Rolls Royce PLC
- Current Assignee Address: US IN Indianapolis GB London
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: H02K1/28
- IPC: H02K1/28 ; H02K1/27 ; H02K15/03 ; C25D7/00 ; H02K1/02 ; C25D5/10
Abstract:
A rotor assembly with a rotor hub, a plurality of permanent magnets positioned circumferentially around at least a portion of the rotor hub, and a coating on at least a portion of the plurality of permanent magnets. The coating forming a retaining band that circumferentially extends around the rotor hub and the plurality of permanent magnets. The coating includes a nano-crystalline layer including a metal or metal alloy and defines an average grain size of less than about 50 nanometers (nm).
Public/Granted literature
- US20190199151A1 NANO-CRYSTALLINE COATING FOR MAGNET RETENTION IN A ROTOR ASSEMBLY Public/Granted day:2019-06-27
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