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    • 1. 发明授权
    • Preignition warning device
    • 预警警告装置
    • US5204630A
    • 1993-04-20
    • US721046
    • 1991-06-26
    • William R. SeitzRichard D. TaylorDavid M. Smith
    • William R. SeitzRichard D. TaylorDavid M. Smith
    • F02B77/08F02P5/15F02P5/152F02P17/12G01M15/04
    • F02P17/12F02P2017/125F02P2017/128F02P5/152
    • A device for and method of providing reliable audible and visual warnings of incipient preignition in a combustion chamber is disclosed. The current flow through at least one engine spark plug is monitored at specified times throughout a number of engine revolutions during which there should be no current flow and both an audible alarm and a visible alarm are activated in the event the monitored current flow exceeds a predetermined threshold. Circuitry establishes time intervals during which there should be no current flow through the monitored spark plug and additional circuitry temporarily provides both an audible alarm and a visible alarm for each occurrence of the monitored current exceeding the predetermined threshold. Such a temporary alarm typically has the same duration as the detected excess current. There is also circuitry for continuously enabling both the audible and visible alarms in the event of an excessive number of excessive monitored current flows within a specified length of time.
    • 公开了一种在燃烧室中提供可能的早期预警的可靠和可视化警告的装置和方法。 通过至少一个发动机火花塞的电流在多次发动机转速的指定时间被​​监控,在此期间不应有电流流动,并且在监视的电流超过预定的情况下,可触发警报和可见警报都被激活 阈。 电路建立时间间隔,在该时间间隔期间,不应该有流经监视的火花塞的电流,并且附加电路临时提供每次发生超过预定阈值的监测电流的可听报警和可见报警。 这种临时警报通常具有与检测到的过量电流相同的持续时间。 还有一种电路,用于在指定时间内过多监测电流过多的情况下,连续启用声音和可见报警。
    • 4. 发明申请
    • DISTRIBUTED ELEMENT FILTERS FOR ULTRA-BROADBAND COMMUNICATIONS
    • 用于超宽带通信的分布式元件滤波器
    • US20140055215A1
    • 2014-02-27
    • US13592506
    • 2012-08-23
    • John E. RogersMichael R. WeatherspoonDavid M. Smith
    • John E. RogersMichael R. WeatherspoonDavid M. Smith
    • H01P1/202B05D5/12
    • H01P1/20336H01P1/20363
    • A method for constructing a radio frequency filter (100) includes depositing on a dielectric substrate (102) a plurality of layers of a conductive material (210, 216, 218, 220, 222), a dielectric material (217), and a sacrificial material (1200, 1500, 1700, 1900). The deposition is controlled to form at least one transmission line (104, 106, 108) including a shield (202) and a center conductor (204) disposed coaxially within the shield. The deposition is further controlled to form at least one distributed filter element electrically coupled to the center conductor (204), and at least one housing (402) electrically coupled to the shield. The method also includes dissolving at least one layer of the sacrificial material to form an interior channel (226) within at least one shield. The dissolving of the sacrificial material also results in the formation of a interior space within at least one housing containing the distributed filter element.
    • 一种用于构造射频滤波器(100)的方法包括在电介质基底(102)上沉积多层导电材料(210,216,218,220,222),介电材料(217)和牺牲层 材料(1200,1500,1700,1900)。 沉积被控制以形成至少一个传输线(104,106,108),其包括同轴地设置在屏蔽内的屏蔽(202)和中心导体(204)。 沉积被进一步控制以形成电耦合到中心导体(204)的至少一个分布式滤波器元件,以及电耦合到屏蔽的至少一个壳体(402)。 该方法还包括溶解至少一层牺牲材料以在至少一个屏蔽内形成内部通道(226)。 牺牲材料的溶解也导致在包含分布式过滤元件的至少一个壳体内形成内部空间。