Convertible acoustic telephone coupler

摘要

Telephone coupling devices which are used to connect various devices into telephone networks without electrical connections require structure which will provide effective acoustic coupling with telephone handsets produced by a variety of manufacturers, many of which differ from each other not only in major dimensional characteristics but also in specific construction. An acoustic coupler having a dimensionally bi-stable flexible coupling element permits use of the coupler of the present invention with an unlimited number of telephone handset configurations.