| 摘要 |
The invention provides a combined cap and signal device to be attached to a tire after the tire is inflated. The device includes an electric alarming unit mounted in a cap-like casing which incorporates an adaptor to be threadedly connected to an inflating valve of the tire. A resilient disc is disposed in the adaptor to be forced by air so that the disc causes the circuit of the electric alarming unit to be opened when the tire is not deflated. |
