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US 9,432,782 B2Granted
Electromagnetic transducer with air gap substitute
AssigneeCochlear Limited
InventorsJohan Gustafsson, Tommy Bergs
Life of this patent
Estimating the term…
Abstract
A balanced electromagnetic transducer, including first and second components connected together by a flexible component, at least a part of which flexes upon exposure of the transducer to energy, wherein the transducer is configured to generate a static magnetic flux that passes from the first component to the second component via the flexible component and travels across no more than two air gaps.
Claims20
A balanced electromagnetic transducer, comprising:
- first and second components connected together by a flexible component, at least a part of the flexible component flexes upon exposure of the transducer to energy, wherein
- the transducer is configured to generate static magnetic flux that passes from the first component to the second component via the flexible component and that travels across no more than two air gaps, wherein
- the balanced electromagnetic transducer is an actuator;
- the balanced electromagnetic transducer is configured to generate a dynamic magnetic flux, and
- the balanced electromagnetic transducer is configured such that the static magnetic flux and the dynamic magnetic flux interact across two air gaps, both of which have a span that varies during actuation of the actuator, thereby actuating the actuator.
2 more elements
A method of transducing energy, comprising:
- moving a first assembly relative to a second assembly in an oscillatory manner, wherein during the movement, there is interaction of a dynamic magnetic flux and a static magnetic flux;
- and
- directing the static magnetic flux along a closed circuit that extends across more than one air gap, all of the more than one air gaps having respective widths that vary while the static magnetic flux is so directed and interacting with the dynamic magnetic flux, wherein:
- a rate of change of variation of width of one of the air gaps of the closed circuit is different from that of at least one of the other air gaps of the closed circuit.
1 more element
Dependencies are inferred from the claim text.