公开(公告)号：US4066033A

公开(公告)日：1978-01-03

申请号：US688711

申请日：1976-05-21

Applicant: Robert A. Perry ,  Placido Martos

Inventor： Robert A. Perry ,  Placido Martos

IPC: B60C23/00 ,  B60C23/04

CPC classification number: B60C23/0496 ,  B60C23/0469 ,  Y10T137/3662

Abstract: A device for indicating when the air within a tire is above or below an optimum pressure range, comprising a housing having a bore therein in which a piston is movable. The piston is spring biased toward one end of the bore and is normally held in a medial sealing position by air pressure from within the tire. In such sealing position, a sealing ring on the piston engages a sealing section of the bore to prevent movement of air along the bore; when the air pressure exceeds or falls below the optimum range, the sealing ring moves over a relieved portion of the bore and allows air to move along the latter to actuate a whistle carried by the piston. An electronic device senses the whistle and signals the operator.

Abstract translation: 一种用于指示轮胎内的空气何时高于或低于最佳压力范围的装置，包括其中具有活塞可移动的孔的壳体。 活塞被弹簧偏压到孔的一端，并且通常由轮胎内的空气压力保持在中间密封位置。 在这种密封位置，活塞上的密封环与孔的密封部分接合，以防止空气沿着孔移动; 当空气压力超过或低于最佳范围时，密封环在孔的缓冲部分上移动，并允许空气沿着该空气移动以致动由活塞承载的口哨。 电子设备感知哨子并向操作人员发出信号。