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1. 发明授权

US4086564A Electronic alarm circuitry 失效
标题翻译：电子报警电路
公开(公告)号：US4086564A
公开(公告)日：1978-04-25
申请号：US581392
申请日：1975-05-27
申请人： William Eugene Claxton
发明人： William Eugene Claxton
IPC分类号： G08C23/04 , B60C23/04 , G01L17/00 , B60C23/02
CPC分类号： G01L17/00 , B60C23/0423
摘要： An electronic device for indicating an abnormal condition in a rotatable member. A typical use for such a device would be for the detection of a low pressure condition in a tire on a vehicle. In the preferred form for this typical use, a reflecting surface, such as a mirror, is affixed to the wheel and associated with a pressure sensitive device. A light source reflects light off the mirror upon each revolution of the tire which is received by a photo-transistor. A timing device in the form of a retriggerable monostable multivibrator is triggered by the photo-transistor and puts out a high signal for a predetermined period of time. As long as the timing device receives triggering signals at time intervals less than that predetermined period of time, the output of the timing device will remain high and no alarm will be given. If a low pressure condition exists, the pressure sensitive device will move the mirror to misalign it with the light source such that the phototransistor does not give a triggering signal to the timing device within the predetermined period of time. Then an alarm, such as a buzzer and/or light, will alert the operator of the abnormal pressure condition. Means can be provided to prevent false alarms should the wheel be moving at a very slow speed such that one revolution thereof would exceed the predetermined time period of the timing device. In addition, means are also provided to prevent false alarms should the reflective surface coincidentally line up with the light source when the vehicle is stopped.
摘要翻译：一种用于指示可旋转构件中的异常状况的电子设备。这种装置的典型用途是用于检测车辆上的轮胎中的低压状态。在该典型用途的优选形式中，诸如反射镜的反射表面固定到车轮并与压敏装置相关联。在由光电晶体管接收的轮胎的每转一圈时，光源将反射光反射出来。可再触发单稳态多谐振荡器形式的定时装置由光电晶体管触发并在预定时间段内输出高信号。只要定时装置以小于该预定时间段的时间间隔接收到触发信号，定时装置的输出将保持高电平并且不会发出报警。如果存在低压条件，则压敏装置将移动反射镜以使其与光源失配，使得光电晶体管在预定时间段内不给定时装置提供触发信号。然后，诸如蜂鸣器和/或灯之类的警报将警告操作者异常压力状况。可以提供装置，以防止轮子以非常慢的速度移动使得其一转将超过定时装置的预定时间段时的假警报。此外，当车辆停止时，还提供装置以防止在反射表面与光源同时排列时的假警报。

2. 发明授权

US4004270A Electronic tire pressure alarm circuitry 失效
标题翻译：电子轮胎压力报警电路
公开(公告)号：US4004270A
公开(公告)日：1977-01-18
申请号：US658786
申请日：1976-02-17
申请人： William Eugene Claxton , James Dennis Gardner , Marvin Lynn Janssen
发明人： William Eugene Claxton , James Dennis Gardner , Marvin Lynn Janssen
IPC分类号： B60C23/04 , B60C23/00
CPC分类号： B60C23/0422
摘要： 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.
摘要翻译：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。

3. 发明授权

US4004272A Optical pressure switch 失效
标题翻译：光压开关
公开(公告)号：US4004272A
公开(公告)日：1977-01-18
申请号：US597809
申请日：1975-07-21
申请人： William Eugene Claxton , Bruce Milan Cernik
发明人： William Eugene Claxton , Bruce Milan Cernik
IPC分类号： B60C23/04 , G01D5/34
CPC分类号： B60C23/0423
摘要： A device for providing an optical indication of the pressure condition in a pressurized member, such as a pneumatic tire. A housing having a window therein carries a reflective surface, such as a mirror, which is mounted on a movable flap. One end of a plunger pin holds the mirror in alignment with the window with the other end of the pin resting on a diaphragm assembly which communicates with the internal pressure of the member. Light from a light source is directed in the window and under normal pressure conditions will be reflected by the mirror. If the internal pressure of the member drops below a predetermined value, the diaphragm will retract dropping the pin thereby moving the mirror out of alignment with the light source. The absence of reflected light is thus indicative of a low pressure condition and corrective measures can be taken.
摘要翻译：一种用于在加压构件例如充气轮胎中提供压力状态的光学指示的装置。其中具有窗口的壳体具有安装在活动翼片上的诸如镜子的反射表面。柱塞销的一端将镜子保持与窗口对齐，销的另一端搁置在与构件的内部压力连通的膜片组件上。来自光源的光被引导到窗口中，在正常压力条件下将被反射镜反射。如果构件的内部压力下降到预定值以下，则隔膜将缩回引脚，从而使反射镜移动与光源对准。因此，没有反射光表示低压条件，并且可以采取纠正措施。

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