Audio speaker utilizing an unanchored magnet for primary force generation
AssigneeSoundStarts, Inc.
InventorJoshua Goldberg
Life of this patent
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Abstract
A speaker apparatus has a container holding a volume of ferrofluid, a permanent magnet suspended in the ferrofluid, and a magnetic excitation apparatus proximate the container. Operation of the excitation apparatus causes movement of the permanent magnet, translated through the ferrofluid to walls of the container, which walls act as resonators creating sound waves in surrounding medium. Audio production is accomplished placing a ferrofluid and a permanent magnet in a container, placing an excitation apparatus in proximity of the permanent magnet, and driving the excitation apparatus to cause movement of the permanent magnet translated through the ferrofluid to walls of the container, which walls act as resonators creating sound waves in surrounding medium.
Claims28
A speaker apparatus comprising:
- a container holding a volume of ferrofluid;
- a permanent magnet suspended in the ferrofluid;
- and
- a magnetic excitation apparatus proximate the container;
- wherein operation of the excitation apparatus causes movement of the permanent magnet, translated through the ferrofluid to walls of the container, which walls act as resonators creating sound waves in surrounding medium.
A method for audio production comprising the steps of:
- (a) placing a ferrofluid and a permanent magnet in a container;
- (b) placing an excitation apparatus in proximity of the permanent magnet;
- and
- (c) driving the excitation apparatus to cause movement of the permanent magnet translated through the ferrofluid to walls of the container, which walls act as resonators creating sound waves in surrounding medium.
Dependencies are inferred from the claim text.