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US 2005/0190946 A1Published application
Dual-gap transducer with radially-charged magnet
AssigneeSTEP Technologies, Inc.
InventorEnrique Stiles
Life of this patent
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Abstract
An electromagnetic transducer such as an audio speaker, having a multi-gap geometry in which there are two or more magnetic air gaps over which magnetic flux flows in a same radial orientation. The magnetic flux is provided by one or more radially-charged magnets.
Claims1
An electromagnetic transducer motor structure comprising
- a yoke having an axis and including a cup and a pole piece magnetically coupled to the cup;
- at least one radially charged magnet magnetically coupled to one of the cup and the pole piece;
- and
- an upper magnetic air gap and a lower magnetic air gap over which magnetic flux flows between the magnet and the other of the cup and the pole piece;
- wherein magnetic flux over the upper and lower magnetic air gaps is in a first same radial direction with respect to axis.
2 more elements
Dependencies are inferred from the claim text.