公开(公告)号：US06698377B1

公开(公告)日：2004-03-02

申请号：US09229014

申请日：1999-01-12

Applicant: Simon Manville Topman ,  Michael Colin Sharp

Inventor： Simon Manville Topman ,  Michael Colin Sharp

IPC: G10K502

CPC classification number: G10K5/00 ,  A01K15/02 ,  A01M31/004

Abstract: A dog whistle comprises a body formed in two parts (2,3) and provided with a mouthpiece (4) which communicates through an air passage (10) with a sound chamber (5) having a vent (6) provided with an air splitter (9), the air passage containing a ramp (8) which directs the airflow produced by blowing the whistle into the sound chamber and towards the air splitter which thereby produces a whistling sound. The chamber produces sound having a narrow frequency bandwidth lying in the range 400 to 800 Hertz, preferably about 400 Hertz. The diameter of the sound chamber is within about 10% of its length and the ramp is at an angle of less than 8°, preferably 4° 30′, to the axis of the air passage. The angle of the surface of the air splitter is greater than 38° preferably 55°.

Abstract translation: 狗口哨包括形成在两个部分（2,3）中并具有通过空气通道（10）连通的接口管（4）的本体和具有通风口（6）的声室（5），所述通风口（6）设置有空气分配器 （9），空气通道包含斜面（8），该斜坡（8）将通过吹哨声产生的气流引导到声室并且朝向空气分离器，从而产生吹口哨声。 该室产生具有窄的频率带宽的声音，其范围为400至800赫兹，优选为约400赫兹。 声室的直径在其长度的约10％内，并且斜面与空气通道的轴线成小于8°，优选为4°30'的角度。 空分器的表面的角度大于38°，最好是55°。