会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Horn loudspeaker and loudspeaker systems
    • 喇叭扬声器和扬声器系统
    • US06621909B1
    • 2003-09-16
    • US09199751
    • 1998-11-25
    • William WebbPaul DarlingtonOliver Wright
    • William WebbPaul DarlingtonOliver Wright
    • H04R2500
    • H04R1/345H04R1/30H04R1/403
    • A horn loudspeaker comprises: a horn (22) having a throat (26) and a mouth (30); a primary electro-acoustic driver (24) mounted at or adjacent the throat of the horn and directed generally along the horn; and at least one secondary electro-acoustic driver (32T, 32B, 32L, 32R) mounted part-way along the horn and directed generally across the horn. The secondary driver(s) can be used to change the local impedance conditions in the horn and therefore to change the polar response of the horn loudspeaker. At least one filter (12A, 12E) is provided for filtering an input signal (34) for the primary driver to produce a filtered signal for the primary driver or each of the secondary drivers. Such a filter may be chosen or designed so as to optimize some aspect of the polar response of the horn loudspeaker, for example to increase directivity, or flatten the polar response within a specified included radiation angle, or to increase omnidirectionality.
    • 喇叭扬声器包括:具有喉部(26)和嘴(30)的喇叭(22); 主电声驱动器(24),其安装在喇叭喉部处或邻近喇叭的喉部处,并且大致沿着喇叭被引导; 以及至少一个辅助电声驱动器(32T,32B,32L,32R),其沿着喇叭安装并且大体上穿过喇叭。 辅助驱动器可以用于改变喇叭中的局部阻抗条件,并因此改变喇叭扬声器的极性响应。 提供至少一个滤波器(12A,12E),用于过滤用于主驱动器的输入信号(34),以产生用于主驱动器或每个次驱动器的滤波信号。 可以选择或设计这种滤波器,以便优化喇叭扬声器的极性响应的某些方面,例如以增加方向性,或者在特定的包含的辐射角内平坦化极坐标响应,或增加全方位性。
    • 8. 发明授权
    • Exterior wall panel
    • 外墙板
    • US4852316A
    • 1989-08-01
    • US120342
    • 1987-11-13
    • William Webb
    • William Webb
    • E04B2/90
    • E04B2/90
    • A building curtain wall panel system is disclosed in which a plurality of mechanically fastened and bonded layers are provided to create a fire resistant, light weight and insulated panel which is easily installed and yet resists impact stress. The panel includes bonded layers attached to a steel frame. The strength and fire resistant properties are enhanced by a medium density calcium silicate composite panel. The exterior architectural design features may be varied by composite coatings including a variety of materials including acrylic resins, fibers, vicron, fungicide, coloring agents, cement and water.
    • 公开了一种建筑幕墙系统,其中设置有多个机械紧固和粘合的层,以产生易于安装并且抵抗冲击应力的耐火,重量轻且绝缘的面板。 面板包括连接到钢框架的粘结层。 强度和耐火性能通过中密度硅酸钙复合板增强。 外部建筑设计特征可以由复合涂层改变,包括各种材料,包括丙烯酸树脂,纤维,维龙,杀真菌剂,着色剂,水泥和水。