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    • 4. 发明授权
    • Electronic tire pressure alarm circuitry
    • 电子轮胎压力报警电路
    • US4004270A
    • 1977-01-18
    • US658786
    • 1976-02-17
    • William Eugene ClaxtonJames Dennis GardnerMarvin Lynn Janssen
    • William Eugene ClaxtonJames Dennis GardnerMarvin Lynn Janssen
    • B60C23/04B60C23/00
    • B60C23/0422
    • An electronic alarm circuit indicates an abnormal pressure condition in a pneumatic tire on a vehicle. The circuit includes an indicator, either in the form of a light or sound buzzer, or both, which can transmit two distinguishable signals, one indicating the presence of an abnormal pressure condition and the other to test the circuit. An actuation circuit includes a normally open pressure switch which communicates with the internal pressure of the tire and closes upon the detection of the abnormal pressure to activate the indicator. The actuation circuit also includes a resistance connected across the pressure switch to provide a path for electrical current when the switch is open to provide the test signal, as may be desired.
    • 电子报警电路表示车辆上的充气轮胎的异常压力状况。 该电路包括以光或声蜂鸣器或两者的形式的指示器,其可以传输两个可区别的信号,一个指示存在异常压力状况,另一个指示器用于测试电路。 致动电路包括常开压力开关,其与轮胎的内部压力进行通信,并且在检测到异常压力时关闭,以激活指示器。 致动电路还包括跨过压力开关连接的电阻,以在开关打开时提供用于电流的路径,以提供测试信号,如可能需要的。
    • 5. 发明授权
    • Apparatus for indicating pneumatic tire pressure
    • 用于指示充气轮胎压力的装置
    • US3930223A
    • 1975-12-30
    • US39742773
    • 1973-09-14
    • KALOGEROPOULOS ALEXIS
    • TSAGAS NICOLAS FOTIOS
    • G01L17/00B60C23/00B60C23/04G08B21/00
    • B60C23/0467B60C23/0422
    • A transducer which communicates with the interior of the tire converts the pressure therein, when the pressure changes, into a corresponding motion which is picked up by a transmission and transmitted to a rolling electrical contact which rolls along a series of discrete electrically conductive members having resistances of different magnitudes associated therewith and corresponding to the tire pressure when a given electrically conductive member is engaged by the rolling contact member. Preferably the rolling contact member engages an electrically nonconductive insulating portion situated between the electrically conductive members in a region of normal tire pressure. The engagement of the rolling contact member with one of the electrically conductive members serves at least partly to complete a circuit which includes an indicator visible to the operator for indicating on a suitable scale the tire pressure.
    • 与轮胎内部连通的换能器将压力变化时的压力转换为由传动装置拾取的相应运动,并传递给沿着一系列具有阻力的分立导电部件滚动的滚动电接点 并且当给定的导电构件与滚动接触构件接合时,与轮胎压力相对应。 优选地,滚动接触构件在正常轮胎压力的区域中接合位于导电构件之间的非导电绝缘部分。 滚动接触构件与其中一个导电构件的接合至少部分地用于完成包括操作者可见的指示器的电路,以便以合适的尺度指示轮胎压力。