EP 0514690 B1 19940720 - Concave dust protection for cone-like loudspeaker.
Title (en)
Concave dust protection for cone-like loudspeaker.
Title (de)
Staubschutzkalotte für Konuslautsprecher.
Title (fr)
Calotte de protection antipoussière pour haut-parleur conique.
Publication
Application
Priority
- DE 4116819 A 19910523
- US 88606992 A 19920520
Abstract (en)
[origin: EP0514690A1] According to the invention, it is specified that the concave dust protection (23) of a cone-like loudspeaker (10) is to be formed from hot press-moulded foam. This has the advantage that concave dust protections (23) formed from this material are to a great extent immune to the effects of fingerprints and simple adhesives can be used to connect them to the diaphragm. If the bead (14) and the concave dust protection (23) are formed from the same foam, this has the advantage that, with a suitable press mould design, the concave dust protection (23) can be formed from the part of the foam mat which would otherwise be left over in the centre of the foam mat if just forming a bead (14). <IMAGE>
IPC 1-7
IPC 8 full level
H04R 1/02 (2006.01); H04R 7/12 (2006.01); H04R 7/20 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
BE DE ES FR GB IT SE
DOCDB simple family (publication)
EP 0514690 A1 19921125; EP 0514690 B1 19940720; DE 4116819 A1 19921126; DE 59200293 D1 19940825; ES 2061295 T3 19941201; US 5293009 A 19940308
DOCDB simple family (application)
EP 92107234 A 19920428; DE 4116819 A 19910523; DE 59200293 T 19920428; ES 92107234 T 19920428; US 88606992 A 19920520