EP 0004988 A1 19791031 - Hearing-aid with combined potentiometer and cylindrical battery holder.
Title (en)
Hearing-aid with combined potentiometer and cylindrical battery holder.
Title (de)
Hörgerät mit einem kombinierten Potentiometer und zylindrischen Batteriebehälter.
Title (fr)
Dispositif aide-ouie avec, en combinaison, un potentiomètre et un boîtier cylindrique pour une batterie.
Publication
Application
Priority
NL 7803967 A 19780414
Abstract (en)
"This invention relates to a hearing aid of the kind which is provided with a cylindrical battery holder. A hearing aid, in particular a "behind-the-ear" hearing aid, provided with a cylindrical battery holder which in a specific position permits a battery to be inserted radially and is rotatably journalled in a housing the battery holder extending partly outside the outer wall of the housing and being provided with a switch which switches on the associated amplifier upon rotation of the battery holder, which battery holder is coupled to the volume control of the amplifier. The volume control may comprise a single annular carbon track or a plurality of conductive contact tracks, which tracks may be arranged either on one of the flat side walls of the battery holder or outside said holder.
IPC 1-7
IPC 8 full level
H04R 25/02 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 25/602 (2013.01 - EP US); H01H 2300/004 (2013.01 - EP); H04R 25/603 (2019.04 - EP US); H04R 2225/61 (2013.01 - EP US)
Citation (search report)
- GB 1153195 A 19690529 - AMPLIVOX LTD
- US 3641288 A 19720208 - LAMP PAUL F
- GB 1231113 A 19710512
- US 3475566 A 19691028 - BAUER EGON
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0004988 A1 19791031; AT 361998 B 19810410; AT A279579 A 19800915; DK 151279 A 19791015; JP S54138312 A 19791026; NL 7803967 A 19791016
DOCDB simple family (application)
EP 79200162 A 19790404; AT 279579 A 19790413; DK 151279 A 19790411; JP 4410579 A 19790411; NL 7803967 A 19780414