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US 6,664,689 B2Granted
Ring-shaped motor core with toroidally-wound coils
OwnerMitchell Roseinventor
Life of this patent
Estimating the term…
Abstract
An electrical machine comprises a magnetically permeable core. The core is elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction. Coils are wound about the core profile and sequentially disposed along the lengthwise direction. The core profile has a surface that is bowed outward.
Claims27
An electrical machine comprising:
- a magnetically permeable core, the core being elongated to thereby define a lengthwise direction and a core profile that is transverse to the lengthwise direction, the core profile having a surface that is bowed outward;
- coils that are wound about the core profile and sequentially disposed along the lengthwise direction;
- and
- an elongated permanent magnet parallel with the core and defining a magnet profile transverse to the lengthwise direction, the magnet profile having a surface that is adjacent and facing the outwardly-bowed surface of the core profile.
1 more element
An electrical machine comprising:
- a magnetically permeable core, the core being elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction;
- coils that are wound about the core profile and sequentially disposed along the lengthwise direction;
- and
- an elongated permanent magnet parallel with the core and defining a magnet profile of which a surface is adjacent and facing and overhanging the core profile.
1 more element
An electrical machine comprising:
- a magnetically permeable core, the core being elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction;
- and
- coils that are wound about the core profile and sequentially disposed along the lengthwise direction;
- the core profile being surrounded on three sides by a permanent magnet.
1 more element
An electrical machine comprising:
- a magnetically permeable core, the core being elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction;
- and
- coils that are wound about the core profile and sequentially disposed along the lengthwise direction;
- the core profile having a surface that is bowed outward;
- and
- the core comprising a first section that is resistant to eddy currents that would circulate along only either of two opposite faces of the first section, and further comprising a second section that is resistant to eddy currents that would circulate along any face of the second section.
3 more elements
An electrical machine comprising:
- a magnetically permeable core, the core being elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction, the core profile having a surface that is bowed outward;
- coils that are wound about the core profile and sequentially disposed along the lengthwise direction;
- coil-free spaces between adjacent coils;
- and
- brackets installed about the coil-free spaces, the brackets configured to provide a flat peripheral surface defined by the peripheral surfaces of the coils and the brackets.
2 more elements
An electrical machine comprising:
- a magnetically permeable first core, the core being elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction, the core profile having a surface that is bowed outward;
- coils that are wound about the core profile and sequentially disposed along the lengthwise direction;
- a second elongated core parallel with the first core;
- and
- three elongated magnets that are parallel with the cores, the cores being interspersed between the magnets.
2 more elements
Dependencies are inferred from the claim text.