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    • 7. 发明授权
    • Air pressure alert system
    • 空气压力报警系统
    • US4970491A
    • 1990-11-13
    • US331875
    • 1989-04-03
    • August SaintRobert L. Berger
    • August SaintRobert L. Berger
    • B60C23/00B60C23/04
    • B60C23/007B60C23/0401B60C23/0408
    • A convenient, reliable, and economical low tire pressure alert system (10) for a vehicle provides a graphic display (14) of low tire conditions to a vehicle occupant. The preferred alert system includes a transmitter (12) coupled with a valve stem of each vehicle tire for sensing a respective low pressure condition of the tire and for producing and transmitting digitally encoded amplitude modulated wireless signals in response. The preferred alert system (10) also includes a plurality of indicators (16) as part of a graphic display (14) representative of the vehicle tires, and a receiver (18) coupled with the indicators (16) for selective actuation thereof in response to reception of the low tire pressure signals.
    • 用于车辆的便利,可靠和经济的低轮胎压力警报系统(10)向车辆乘员提供低轮胎状况的图形显示(14)。 优选的警报系统包括与每个车辆轮胎的阀杆联接的发射器(12),用于感测轮胎的各自的低压状况,并且响应地产生和传送数字编码的调幅无线信号。 优选警报系统(10)还包括作为表示车辆轮胎的图形显示器(14)的一部分的多个指示器(16),以及与指示器(16)耦合的接收器(18),用于响应于选择性地致动 以接收低轮胎压力信号。