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    • 2. 发明授权
    • Combo fluid valve
    • 组合流体阀
    • US4889153A
    • 1989-12-26
    • US17750
    • 1987-02-24
    • Dean E. ZepernickDonald R. OlsonRobert D. Scott
    • Dean E. ZepernickDonald R. OlsonRobert D. Scott
    • F16K11/07
    • F16K11/07Y10T137/5109Y10T137/86622Y10T137/8671
    • A valve construction which may be used to control the flow of any desired fluid in any desired valving action and which provides an interchangeable and removable activating means and an interchangeable and removable valve cartridge assembly of the lap spool, packed spool, proportional flow or any other version. The valve comprises a removable and interchangeable activating means, a removable and interchangeable cap assembly, a novel housing adapted to accept a removable and interchangeable valve cartridge assembly of the lap spool, packed spool, proportional flow, or any other version, and a removable and interchangeable valve cartridge assembly of the lap spool, packed spool, proportional flow, or any other version comprised of a plunger and separator means.
    • 可用于控制任何所需阀动作中任何所需流体的流动的阀结构,其提供可互换和可拆卸的致动装置,以及可互换和可拆卸的阀芯组件,包括卷轴,比例流或任何其它 版。 该阀包括可拆卸和可互换的启动装置,可移除和可互换的盖组件,适于接纳可拆卸和可互换的套筒阀芯,包装阀芯,比例流量或任何其他形式的阀芯组件的新型外壳,以及可拆卸和可互换的盖组件, 搭接卷轴的可互换的阀芯组件,包装的卷轴,比例流动或由柱塞和分离器装置组成的任何其它形式。
    • 6. 发明授权
    • Programmable electronic siren
    • 可编程电子警报器
    • US4065767A
    • 1977-12-27
    • US719644
    • 1976-09-01
    • Jacob NeuhofRobert D. Scott
    • Jacob NeuhofRobert D. Scott
    • G08B3/10G10K15/02G08B3/00
    • G08B3/10G10K15/02
    • A dynamic loudspeaker is driven by chopped d.c. from the collector of a transistor. A free wheeling diode is connected in parallel with the speaker circuit to dissipate the inductive energy in the speaker voice coil when the transistor is turned off. The transistor is controlled by a voltage controlled oscillator which, under control of other elements, can be made to produce a wide variety of cyclically varying output signals for producing a wide range of sounds, tones and signals from the loudspeaker. This permits selection of a tone which differs sufficiently from the ambient noise to assure attracting attention. By the use of chopped d.c. to drive the speaker, the expense, weight and bulk of an impedance matching transformer is eliminated. A plurality of individually operable switches are provided for switching circuit elements in and out of circuit to modify wave shapes and alter sound output. Another group of individually operable switches mixes selected wave shapes to produce various compound waves and produce additional sound variations. One switch provides pitch control and another provides output volume control.
    • 动态扬声器由切碎的直流电驱动。 从晶体管的集电极。 一个续流二极管与扬声器电路并联连接,以在晶体管断开时消散扬声器音圈中的感应能量。 晶体管由电压控制的振荡器控制,其在其它元件的控制下可以产生各种各样的循环变化的输出信号,用于产生来自扬声器的大范围的声音,音调和信号。 这允许选择与环境噪声充分不同的音调,以确保引起注意。 通过使用切碎的直径 为了驱动扬声器,消除了阻抗匹配变压器的费用,重量和体积。 提供多个单独可操作的开关,用于将电路元件进出电路切换以修改波形并改变声音输出。 另一组可单独操作的开关混合所选择的波形以产生各种复合波并产生额外的声音变化。 一个开关提供音调控制,另一个提供输出音量控制。