{
  "$type": "site.standard.document",
  "description": "A bearing is mounted to a static structure outwardly of the shaft, and supporting the shaft. A bearing compartment (222) is defined by face seal arrangements (200) on each of two axial sides of a bearing. Each face seal arrangement (200) includes a seal seat (228) rotating with the shaft and a…",
  "path": "/patents/1409849",
  "publishedAt": "2025-12-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B64D27/10",
    "RTX CORP [US]"
  ],
  "textContent": "A bearing is mounted to a static structure outwardly of the shaft, and supporting the shaft. A bearing compartment (222) is defined by face seal arrangements (200) on each of two axial sides of a bearing. Each face seal arrangement (200) includes a seal seat (228) rotating with the shaft and a non-rotating sealing ring (202). The seal housing (206) is exposed to high pressure air outward of the bearing compartment (222). A coil spring (210) biases the seal housing (206) towards the seal seat (228), such that the sealing face (212) is biased into contact with the seal seat (228) by a bias force including a net fluid force acting on the seal housing (206) and the coil spring (210). The sealing face (212) is defined by a contact portion (214) contacting the seal seat (228) and a feed portion (213) recessed from the seal seat (228). The feed portion (213) includes a plurality of circumferentially spaced feed slots (216) fluidly connected to at least one annular groove (218).",
  "title": "FACE SEAL ARRANGEMENT WITH REDUCED FORCE AND PRESSURE"
}