{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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    "mimeType": "image/png",
    "size": 105842
  },
  "description": "Disclosed is an air-operated brake actuator, including: a hollow upper housing; a hollow lower housing spaced apart from the upper housing in a lower direction; a coupling housing configured to couple and restrain the upper housing and the lower housing to each other; a piston disposed in the upper…",
  "path": "/patents/926655",
  "publishedAt": "2017-05-17T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T13/38",
    "MIRAEVC CO LTD [KR]"
  ],
  "textContent": "Disclosed is an air-operated brake actuator, including: a hollow upper housing; a hollow lower housing spaced apart from the upper housing in a lower direction; a coupling housing configured to couple and restrain the upper housing and the lower housing to each other; a piston disposed in the upper housing to divide an inside of the upper housing into a spring chamber and a pressure chamber disposed below the spring chamber; a hollow actuator rod disposed in the piston; a casing bolt head disposed at a lower end of the actuator rod and having an air flow hole formed therein; a pilot lip seal fixed to an outer surface of the casing bolt head to seal an outer end of the air flow hole; a compression spring installed in the spring chamber; a diaphragm disposed in the lower housing to divide an inside of the lower housing into a service chamber and a push rod chamber disposed below the service chamber; a pressure plate configured to contact a lower end of the diaphragm and move vertically along the diaphragm; and a push rod having one end vertically coupled to a lower end of the pressure plate and the other end located in the push rod chamber through a through hole of the upper housing.",
  "title": "BRAKE ACTUATOR HAVING SEALING STRUCTURE FOR INSIDE AIR CIRCULATION"
}