{
  "$type": "site.standard.document",
  "description": "In a structure for an automatic transmission wherein a brake (110) is arranged in a casing, a hydraulic servomechanism for actuating the brake includes a cylinder (161), a piston (162), a return spring for biasing the piston and including an annular portion (164a) abutting on the piston and a…",
  "path": "/patents/1097089",
  "publishedAt": "2003-04-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60T1/062",
    "JATCO LTD [JP]"
  ],
  "textContent": "In a structure for an automatic transmission wherein a brake (110) is arranged in a casing, a hydraulic servomechanism for actuating the brake includes a cylinder (161), a piston (162), a return spring for biasing the piston and including an annular portion (164a) abutting on the piston and a plurality of leaf-spring portions (164b) protruding outward equiangularly from the outer periphery of the annular portion, and a plurality of pressing portions (163) formed with the piston and abutting on the servomechanism through clearances between the leaf-spring portions of the return spring.",
  "title": "Cylinder for automatic transmission"
}