Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
Akustisches Signalinstrument, bei dem vor der elektromagnetisch angetriebenen Membran nach dem Schallkoerper oder Schallbecher hin eine zweite durch die von der Membran erzeugten Tonwellen in Mitschwingung versetzte Platte angeordnet ist