公开(公告)号：US5819779A

公开(公告)日：1998-10-13

申请号：US716887

申请日：1996-09-20

申请人： Touji Takemura ,  Hirohisa Maki

发明人： Touji Takemura ,  Hirohisa Maki

IPC分类号： F16K15/20 ,  B60C23/00 ,  F16K37/00 ,  F16K15/70

CPC分类号： B60C23/0496 ,  Y10T137/3677 ,  Y10T137/3693

摘要： In the state where a tire valve cap body has been fixedly screwed onto a valve mouthpiece, a top cover is pushed to open a tire valve, allowing introduction of a tire air pressure. A piston is slidably incorporated in a cylinder chamber defined within the top cover and is urged by a return spring. Upon the introduction of the tire air pressure, the piston is displaced to a position at which the biasing force of the return spring balances with the force of the introduced air pressure. An indication mechanism is provided to indicate, through an indication window formed in a cylinder member, a position of the piston member displaced by the tire air pressure introduced, thereby indicating a measurement value of the tire air pressure.

摘要翻译： 在将轮胎气门盖体固定地拧入阀口部件的状态下，按压顶盖以打开轮胎气门，从而引入轮胎空气压力。 活塞可滑动地结合在限定在顶盖内的气缸室中并且由复位弹簧推动。 在引入轮胎空气压力时，活塞移动到复位弹簧的偏置力与引入的空气压力的力平衡的位置。 提供指示机构，通过形成在气缸构件中的指示窗口来指示由引入的轮胎空气压力偏移的活塞构件的位置，从而指示轮胎空气压力的测量值。