{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "An elevator safety device 16 for monitoring a landing door 10 of an elevator system 2 is provided. The elevator system 2 comprises a landing door sensor 14 arranged to detect a state of the landing door 10. The elevator safety device 16 comprises a power source 20 arranged to power the landing door…",
  "path": "/patents/1393908",
  "publishedAt": "2025-05-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B66B13/14",
    "OTIS ELEVATOR CO [US]"
  ],
  "textContent": "An elevator safety device 16 for monitoring a landing door 10 of an elevator system 2 is provided. The elevator system 2 comprises a landing door sensor 14 arranged to detect a state of the landing door 10. The elevator safety device 16 comprises a power source 20 arranged to power the landing door sensor 14 independently of a power supply 19 of the elevator system 2 and a memory 22 arranged to record a state of the landing door 10 detected by the landing door sensor 14 when the landing door sensor 14 is powered by the power source 20.",
  "title": "ELEVATOR SAFETY DEVICES"
}