(19)
(11) EP 0 984 666 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.09.2001 Bulletin 2001/38

(43) Date of publication A2:
08.03.2000 Bulletin 2000/10

(21) Application number: 99115521.9

(22) Date of filing: 05.08.1999
(51) International Patent Classification (IPC)7: H04R 25/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 06.08.1998 US 130039
01.04.1999 US 127421 P

(71) Applicant: RESISTANCE TECHNOLOGY, INC.
Arden Hills, MA 55112 (US)

(72) Inventors:
  • Darbut, Alexander L.
    Edina, Minnesota 55436 (US)
  • Richels, Gerald D.
    Blaine, Minnesota 55449-5424 (US)
  • Robinson, Scott
    Forest Lake, Minnesota 55025 (US)

(74) Representative: Kirschner, Klaus Dieter, Dipl.-Phys. 
Schneiders & Behrendt Rechtsanwälte - Patentanwälte Sollner Strasse 38
81479 München
81479 München (DE)

   


(54) Hearing aid microphone and housing


(57) The present invention includes a compact and economical construction of a microphone (26) wherein the housing is preferably constructed of two identical halves (14,16) that form a chamber (28) in which the microphone is retained. The housing also includes first and second acoustic passages (18,20) in an acoustic relationship with the first and second ports (30,32) of the microphone (26) and extending to an exterior surface of the housing. A switching mechanism (15) is preferably rotatably secured to the housing such that when the switching mechanism (15) is in a first position, the first and second passages (18,20) are in an acoustic receptive state and when rotated to a second position only one of the acoustic passages is in an acoustic receptive state.






Search report