US 12,137,334 B2
Linear motor magnet assembly and loudspeaker unit
Timothy Ruben Scheek, Rotterdam (NL)
Assigned to Mayht Holding B.V., Nieuw-Vennep (NL)
Filed by Mayht Holding B.V., Santa Barbara, CA (US)
Filed on Oct. 19, 2023, as Appl. No. 18/490,631.
Application 18/490,631 is a continuation of application No. 17/602,314, previously published as PCT/EP2019/069355, filed on Jul. 18, 2019.
Claims priority of application No. 19168687 (EP), filed on Apr. 11, 2019.
Prior Publication US 2024/0048914 A1, Feb. 8, 2024
Int. Cl. H04R 9/06 (2006.01); H04R 3/00 (2006.01); H04R 7/04 (2006.01); H04R 7/16 (2006.01); H04R 9/02 (2006.01)
CPC H04R 9/063 (2013.01) [H04R 3/002 (2013.01); H04R 7/04 (2013.01); H04R 7/16 (2013.01); H04R 9/025 (2013.01); H04R 9/06 (2013.01); H04R 2209/026 (2013.01); H04R 2209/041 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A loudspeaker unit comprising:
a linear motor assembly comprising a membrane actuating element comprising a voice coil and a first magnetic body disposed axially between a second magnetic body and a third magnetic body, wherein:
the first magnetic body is fixed with respect to the membrane actuating element,
the first magnetic body comprises a disc-shaped permanent magnet,
the second magnetic body comprises an electromagnet configured to pull the first magnetic body in a first axial direction,
the third magnetic body comprises an electromagnet configured to pull the first magnetic body in a second axial direction opposite the first axial direction,
the voice coil is disposed at least partially between the second magnetic body and the third magnetic body when at a resting position,
and
a first membrane coupled to the membrane actuating element, the linear motor assembly configured to move the first membrane inward and outward along the axial directions relative to the loudspeaker unit.