Invention Grant
US07994674B2 Flux-focused shaped permanent magnet, magnetic unit having the magnets, device having the magnetic units and method for asymmetrically focusing flux fields of permanent magnets
失效
磁通聚焦型永磁体,具有磁体的磁性单元,具有磁性单元的装置和用于非对称地聚焦永磁体的磁场的方法
- Patent Title: Flux-focused shaped permanent magnet, magnetic unit having the magnets, device having the magnetic units and method for asymmetrically focusing flux fields of permanent magnets
- Patent Title (中): 磁通聚焦型永磁体,具有磁体的磁性单元,具有磁性单元的装置和用于非对称地聚焦永磁体的磁场的方法
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Application No.: US12020024Application Date: 2008-01-25
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Publication No.: US07994674B2Publication Date: 2011-08-09
- Inventor: W. Thomas McClellan
- Applicant: W. Thomas McClellan
- Agent Laurence A. Greenberg; Werner H. Stemer; Ralph E. Locher
- Main IPC: H02K21/26
- IPC: H02K21/26 ; H02K21/38 ; H02K23/04 ; H02K21/12

Abstract:
A flux-focused, shaped permanent magnet includes a body of magnetic material having multiple surface contouring to form a reduced flux side with convex surfaces and an increased flux side with concave surfaces. The surfaces develop high and low resistance external flux paths creating focused asymmetric flux fields. A magnetic unit having the shaped permanent magnet and a magnetic flux attracter or two shaped permanent magnets interconnected by two segmented permanent magnets and a kinetic device having a stationary stator ring, a rotor disc rotating within the stator ring and a multiplicity of the magnetic units on the stator ring and the rotor disc, are also provided.
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