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    • 46. 发明申请
    • ROTARY VALVE FOR BRASS INSTRUMENTS
    • 黄铜仪器旋转阀
    • WO1997048091A1
    • 1997-12-18
    • PCT/US1997009597
    • 1997-05-30
    • THE UNIVERSITY OF AKRON
    • THE UNIVERSITY OF AKRONLEONARD, Brian, Phillip
    • G10D09/04
    • G10D9/04
    • A rotary valve (10) for a brass wind instrument includes a rotor (12) rotatably disposed in a casing (30). Four tube connectors (50) are connected to the casing in fluid-tight connections. Each tube connector (50) has a passageway (52) therethrough having a constant, circular cross section. The rotor (12) has two ducts (14, 16) therethrough, each having a constant, circular cross section with a diameter (18) equal to the diameter of the passageways (52) through the tube connectors (50). The rotor (12) is selectively rotatable between an unactuated position and an actuated position. When the rotor (12) is in the unactuated position, a single soundpath (70) is formed through the valve. The single soundpath (70) has limited curvature and has a constant diameter. When the rotor (12) is in the actuated position, two soundpaths (72, 74) are formed through the valve (10). The first of the two soundpaths (72) subjects the sound to only a single 45 degree turn through the valve.
    • 一种用于黄铜管乐器的旋转阀(10)包括可旋转地设置在壳体(30)中的转子(12)。 四个管连接器(50)以流体密封的连接连接到壳体。 每个管连接器(50)具有穿过其中具有恒定的圆形横截面的通道(52)。 转子(12)具有穿过其中的两个管道(14,16),每个具有恒定的圆形横截面,其直径(18)等于通过管连接器(50)的通道直径(52)。 转子(12)可选择性地在未致动位置和致动位置之间旋转。 当转子(12)处于未致动位置时,通过该阀形成单个声音路径(70)。 单个声音路径(70)具有有限的曲率并且具有恒定的直径。 当转子(12)处于致动位置时,通过阀(10)形成两个声音路径(72,74)。 两个声音路径(72)中的第一个使声音仅通过阀门转过45度。