US 5,204,917 A · Modular hearing aid

Abstract

A modular hearing aid having separate microphone, receiver, amplifier and battery modules. The microphone module is connected to the receiver module by two dovetails. The receiver module is connected to the amplifier module by one dovetail and to a forwardly projecting plate of the battery module by another dovetail. The amplifier module is connected to the battery module by another dovetail. A flexible circuit board of the amplifier module has a flap which extends over part of the receiver module and is soldered to pins projecting therefrom. The pins extend within the receiver housing and are connected to the receiver therein. Another flap of the circuit board extends over part of the battery module and is soldered to connections on the battery module. Another flexible circuit board extends from the amplifier module over the receiver module and is connected to pins on the microphone module housing. Cover plates cover the top and bottom of the assembled modules to provide a cosmetically attractive appearance.

Claims16

Dependent claims

A modular hearing aid comprising:

(a) a microphone module having a microphone therein,
(b) a receiver module having a receiver therein,
(c) an amplifier module having an amplifier therein,
(d) a battery module adapted to receive a battery,
(e) said modules having removably connected together by dovetail connections, each dovetail connection between a pair of connected modules comprising a first surface on one of said connected modules defining a slot having a neck of first width and an interior of second width greater than said first width, and a projection on the other of said connected modules shaped to fit snugly and slidingly into said slot, said projection having an outer surface of third width corresponding to said second width and said projection having a neck of fourth width corresponding to said first width, said dovetail connections all extending in a direction substantially parallel to each other, said dovetail connections having ends,
(f) and a pair of cover plates, one on each side of said hearing aid, said cover plates covering said modules and said ends of said dovetail connections and being removably connected to said assembled modules and substantially covering said modules to help seal said modules against ingress of moisture, dust and the like and to provide a changeable cosmetically attractive appearance for said hearing aid.

3 more elements

Dependencies are inferred from the claim text.

Modular hearing aid

Life of this patent

Modular hearing aid

Life of this patent

Abstract

Claims16