Patent ID: 8820154
Filing Date: 2014-09-02
Classification: B60C

Abstract:
1. A transmission device provided in a tire cavity region for transmitting tire information related to a condition of a tire, the transmission device comprising: a sensor configured to detect a condition of gas filled in a tire cavity region encompassed by the tire and a rim, as tire information; a transmitter configured to wirelessly transmit the detected tire information; and a housing that covers the sensor and the transmitter, the housing including a surface that defines an opening that connects an internal space within the housing and the tire cavity region, the opening extending in an extending direction on the surface of the housing while forming a shape of a straight line, a curved line, or a combination of a straight line and a curved line, and a maximum value of an opening width orthogonal to the extending direction of the opening being not more than 0.8 mm.