公开(公告)号：US4155325A

公开(公告)日：1979-05-22

申请号：US869188

申请日：1978-01-13

Applicant: Kuei Chin Yu

Inventor： Kuei Chin Yu

IPC: B60C23/04

CPC classification number: B60C23/0403 ,  Y10S116/08

Abstract: A warning indicator disclosed is secured to a pneumatic tire valve to sense tire pressure and emit an audible signal when the tire pressure goes below a predetermined value. A connector of the indicator is initially threaded onto the tire valve and a cap thereof is subsequently threaded onto the connector. The connector includes a valve opener that opens the tire valve so that pressurized tire air flows to a pressure sensing valve which prevents air flow to the cap when normal tire pressures are sensed. A valve element of the pressure sensing valve moves into and out of engagement with a valve seat and is engaged by the first end of a valve actuator that also has a second end projecting toward the cap. The cap includes a housing with a spring that biases an actuating member into engagement with the second end of the actuator so as to move the valve element out of engagement with the valve seat when low tire air pressure is present. The second end of the actuator has a rounded shape engaged by the actuating member with substantially point contact so as to generate a minimum of frictional force tending to rotate the actuator and move the valve element as the cap is screwed onto the connector. Air flow to the cap blows up an elastomeric cover thereof which ultimately ruptures to provide an audible bang indicating low tire pressure. Subsequently, a ball of a closure valve in the cap seats against a round valve seat to prevent continued air flow from the tire to the atmosphere through the indicator.

Abstract translation: {PG，1]当轮胎压力低于预定值时，所公开的警告指示器被固定到充气轮胎气门以感测轮胎压力并发出可听见的信号。 指示器的连接器最初被螺纹连接到轮胎阀上，并且其盖子随后被螺纹连接到连接器上。 连接器包括开启轮胎阀的开启器，使得加压的轮胎空气流到压力感测阀，当感测到正常的轮胎压力时防止空气流向帽。 压力感测阀的阀元件进入和离开与阀座的接合，并且由阀致动器的第一端接合，阀致动器还具有向盖突出的第二端。 盖包括具有弹簧的壳体，该弹簧将致动构件偏置成与致动器的第二端接合，以便当存在低轮胎空气压力时使阀元件与阀座脱离接合。 致动器的第二端具有由致动构件以基本上点接触的方式接合的圆形，以便产生最小的摩擦力，倾向于使致动器旋转，并且当盖拧到连接器上时移动阀元件。 到达盖子的气流吹动其弹性体盖，其最终破裂以提供指示低轮胎压力的可听见的爆炸声。 随后，盖中的关闭阀的球座抵靠圆形阀座，以防止持续的空气从轮胎通过指示器流向大气。