Invention Application
- Patent Title: MULTI-CORE, MULTI-DIMENSION ELECTROMAGNET
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Application No.: US15693321Application Date: 2017-08-31
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Publication No.: US20180085786A1Publication Date: 2018-03-29
- Inventor: Teera Songatikamas , Joseph C. Doll , Matthew A. Bigarani
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Main IPC: B06B1/04
- IPC: B06B1/04 ; B06B1/02 ; H01F7/16

Abstract:
In an embodiment, an electromagnetic reluctance actuator comprises: a core assembly including a plurality of magnetic cores arranged in a two-dimensional plane, each core comprised of ferromagnetic material and wound by a coil of conductive wire, the coils operable for producing magnetic flux density in response to electrical currents flowing in the coils, wherein the current in each coil flows in a direction that is opposite the currents flowing in adjacent coils; and an actuator, at least a portion of which comprises ferritic material magnetically coupled to the coils by a magnetic circuit, for producing mechanical force in response to the effect of magnetic flux on the portion, the portion of the actuator being mounted for movement relative to the core assembly.
Public/Granted literature
- US10744531B2 Multi-core, multi-dimension electromagnet Public/Granted day:2020-08-18
Information query
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