Patent ID: 9358847
Filing Date: 2016-06-07
CPC Classification: B60C

Claim Text:
1. A transmitter apparatus provided inside a tire cavity region enclosed by a tire and a rim, the apparatus comprising: a sensor configured to detect a condition of gas filled in the tire cavity region as tire information; a transmitter configured to transmit the detected tire information; and a housing including a wall that covers the sensor and the transmitter, the housing being provided with an internal space separated from the tire cavity region by the wall and a communicating hole penetrating the wall and connecting the internal space and the tire cavity region; the communicating hole being formed such that an inside opening part at a surface of the housing facing the internal space is formed with a wider opening area than an outside opening part at a surface of the housing facing the tire cavity region; and a recessed part being provided on a wall surface defining the communicating hole, the recessed part having a concave shape and recessed toward a surface of the housing that includes the outside opening part.