{
  "$type": "site.standard.document",
  "description": "A tire air pressure monitoring device includes a sensor (5) which detects a physical quantity relating to tire air pressure, and a transmitter (8) which sends signals detected by the sensor (5). The sensor (5) is a sound pressure level sensor which detects a sound pressure level inside a tire…",
  "path": "/patents/1089266",
  "publishedAt": "2004-03-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C23/0408",
    "YOKOHAMA RUBBER CO LTD [JP]"
  ],
  "textContent": "A tire air pressure monitoring device includes a sensor (5) which detects a physical quantity relating to tire air pressure, and a transmitter (8) which sends signals detected by the sensor (5). The sensor (5) is a sound pressure level sensor which detects a sound pressure level inside a tire cavity filled with air. The transmitter (8) is enabled to send the signals only when the sound pressure level detected by the sound pressure level sensor is changed.",
  "title": "Tire air pressure monitoring device"
}