{
  "$type": "site.standard.document",
  "description": "A master cylinder is provided with a resin-made cylinder main body (2) formed with a stepped portion (2c) at a boundary between a cylinder hole (2a) and a mount hole (2b), a piston (3) defining a hydraulic chamber (14) in cooperation with the inner circumferential surface of the cylinder hole (2a)…",
  "path": "/patents/1078283",
  "publishedAt": "2005-04-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T11/16",
    "NABTESCO CORP [JP]"
  ],
  "textContent": "A master cylinder is provided with a resin-made cylinder main body (2) formed with a stepped portion (2c) at a boundary between a cylinder hole (2a) and a mount hole (2b), a piston (3) defining a hydraulic chamber (14) in cooperation with the inner circumferential surface of the cylinder hole (2a), a guide sleeve (8) adapted to guide a base end portion of the piston and locked in the cylinder main body (2) by a locking device, a first annular sealer (10) which has an inner seal member (10a) made of a soft material and an outer seal member (10b) made of a hard material held on the outer circumferential surface of a leading end portion of the piston, and a second annular sealer (17) squeezed between the stepped portion and a leading end portion of the guide sleeve (8). At least a portion of the outer circumferential surface of the piston (3) to be held in contact with the second annular sealer is made of a metal. There can be provided an inexpensive master cylinder capable of suppressing an occurrence of squeak and rattle caused by the stick-slip phenomenon.",
  "title": "A master cylinder"
}