公开(公告)号：US4541505A

公开(公告)日：1985-09-17

申请号：US517901

申请日：1983-07-28

申请人： Leonardo Beltrame ,  Attilio Granziera

发明人： Leonardo Beltrame ,  Attilio Granziera

IPC分类号： G10K9/02 ,  G10K11/00

CPC分类号： G10K9/02

摘要： An improved acoustic unit base for electropneumatic horns, of the type comprising a main body peripherally seamed to an end piece with a diaphragm therebetween. Said main body is formed by connecting together a first and a second member of deep-drawn sheet metal, the first comprising a central hole and the second forming a cylindrical seat for receiving a bush with a lipped opening which rests on the diaphragm.

摘要翻译： 用于电动气动喇叭的改进的声学单元基座，其类型包括外围地缝合到端片的主体，隔膜之间具有隔膜。 所述主体通过将深冲金属片的第一和第二构件连接在一起而形成，第一和第二构件包括中心孔，第二构件形成圆柱形座，用于容纳具有位于隔膜上的唇形开口的衬套。

公开(公告)号：US06754360B2

公开(公告)日：2004-06-22

申请号：US10182799

申请日：2002-11-25

申请人： Attilio Granziera

发明人： Attilio Granziera

IPC分类号： H04R2500

CPC分类号： G10K9/20

摘要： A signal-horn has an electromagnetically actuated oscillating membrane coupled to an acoustic amplifier having a volute wound duct formed of a first length with generally constant section having an inlet for the sound signal and a second length with variable section in the form of a conical exponential having an outlet for the sound signal. The ratio of the figure representing the volume defined by the oscillating membrane between two points of maximum elongation and the figure representing the area of the cross section of the first length is between 16 and 20.

摘要翻译： 信号喇叭具有耦合到声放大器的电磁致动振荡膜，声音放大器具有由第一长度形成的涡卷缠绕管道，第一长度具有通常恒定的部分，具有用于声音信号的入口，第二长度具有锥形指数形式的可变截面 具有声音信号的出口。 表示由两个最大伸长点之间的振荡膜限定的体积的数字与表示第一长度的横截面面积的图形的比率在16和20之间。