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    • 2. 发明授权
    • Adaptive cooling system
    • 自适应冷却系统
    • US5410448A
    • 1995-04-25
    • US104518
    • 1993-08-10
    • Charles R. Barker, IIIRichard E. Olson
    • Charles R. Barker, IIIRichard E. Olson
    • H05K7/20H05H7/20
    • H05K7/207H05K7/20572
    • A parallel air flow system which automatically maintains proper coolant flow regardless of the number of circuit boards installed in an enclosure. The enclosure is constructed such that air flow path through any one slot does not affect the air flow through any other slot. Proper air flow through the entire system is maintained by an air flow sensor disposed in an air flow path having a known air flow resistance. This sensor controls the speed of an air-mover in order to maintain a constant predetermined air flow through the known resistance, in such a way that a constant static air pressure is maintained at each slot. Baffle modules are preferably inserted into the enclosure to prevent air flow into any empty slots, to reduce the total air volume necessary to achieve the predetermined static pressure, thereby reducing the audible noise generated by the air-mover.
    • 并联气流系统,无论安装在外壳中的电路板数量如何,都能自动保持适当的冷却液流量。 外壳被构造成使得通过任何一个槽的空气流动路径不影响通过任何其它槽的空气流。 通过设置在具有已知气流阻力的空气流路中的空气流量传感器维持通过整个系统的适当空气流。 该传感器控制空气推动器的速度,以便通过已知电阻保持恒定的预定空气流,使得在每个狭槽处保持恒定的静态空气压力。 挡板模块优选地插入到外壳中以防止空气流入任何空槽,以减少实现预定静压力所需的总空气体积,从而降低由空气推动器产生的可听见的噪音。
    • 4. 发明授权
    • Loudspeaker system with broad image source
    • 扬声器系统具有广阔的图像源
    • US4266092A
    • 1981-05-05
    • US957423
    • 1978-11-02
    • Charles R. Barker, III
    • Charles R. Barker, III
    • H04R1/26H04R1/34H04R1/28
    • H04R1/26H04R1/345
    • A loudspeaker system comprises a woofer in a front panel, a midrange driver facing to the front and a tweeter in a corner panel separated from the midrange driver by the woofer and pointing to the front and side with a crossover network arranged to energize at least the midrange and tweeter in an overlapping frequency range. An adjustable deflector is positioned near the tweeter. Another embodiment of the invention has only a woofer and a tweeter on only one corner panel with the crossover network arranged to energize the two in a common frequency range that is greater than an octave.
    • 扬声器系统包括前面板中的低音扬声器,面向前部的中频驱动器和通过低音扬声器与中置驾驶员分离的角落面板中的高音单元,并且指向前侧和侧面,交叉网络布置成至少激励 中频和高音扬声器在重叠频率范围内。 可调式偏转器位于高音单元附近。 本发明的另一个实施例在仅一个拐角面板上仅具有低音扬声器和高音单元,其中交叉网络布置成在大于八度的公共频率范围内激励两者。