{
  "$type": "site.standard.document",
  "description": "A park brake actuator (\"PBA\") may comprise a shaft 110 having a friction hub 108 disposed about the shaft, the friction hub fixed against rotation with respect to the shaft, a permanent magnet array (PMA) 122 disposed circumferentially about the shaft, the PMA comprising a cylindrical structure…",
  "path": "/patents/940501",
  "publishedAt": "2016-07-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T1/06",
    "GOODRICH CORP [US]"
  ],
  "textContent": "A park brake actuator (\"PBA\") may comprise a shaft 110 having a friction hub 108 disposed about the shaft, the friction hub fixed against rotation with respect to the shaft, a permanent magnet array (PMA) 122 disposed circumferentially about the shaft, the PMA comprising a cylindrical structure comprising a Type A magnet 202 adjacent a Type B magnet 204 in an annular arrangement, and a coil 106 disposed circumferentially about the PMA and configured to conduct at least one of a positive current pulse and a negative current pulse.",
  "title": "BI-STABLE BRAKE WITH PERMANENT MAGNET ARRAY"
}