US 7,321,664 B2
Receiver having an improved bobbin
Stephan Olivier Van Banning, IJmuiden (Netherlands); Alwin Fransen, Delft (Netherlands); and Paul Christiaan Van Hal, Amsterdam (Netherlands)
Assigned to SonionMicrotronic Nederland B.V., Amsterdam (Netherlands)
Filed on Jan. 13, 2004, as Appl. No. 10/756,589.
Prior Publication US 2005/0152574 A1, Jul. 14, 2005
Int. Cl. H04R 11/00 (2006.01)
U.S. Cl. 381—418  [381/412; 381/417] 8 Claims
OG exemplary drawing
 
1. A receiver for a listening device, comprising:
a magnet assembly;
an armature having a moveable portion and a fixed portion; and
a coil assembly including a bobbin and a conductive wire wound around said bobbin, said coil assembly being adjacent to said magnet assembly and, together with said magnet assembly, defining a passage through which said moveable portion passes, said bobbin including an armature-mounting structure configured to interlock with said fixed portion of said armature such that said moveable portion of said armature is substantially centered within said passage in response to said fixed portion being interlocked with said armature-mounting structure.