{
  "$type": "site.standard.document",
  "description": "A hydraulic shock absorber includes: an expansion-side passage and a contraction-side passage that connect an expansion-side chamber with a contraction-side chamber; an expansion-side valve body configured to open or close the expansion-side passage; a contraction-side valve body configured to open…",
  "path": "/patents/939347",
  "publishedAt": "2016-08-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G17/08",
    "KYB CORP [JP]"
  ],
  "textContent": "A hydraulic shock absorber includes: an expansion-side passage and a contraction-side passage that connect an expansion-side chamber with a contraction-side chamber; an expansion-side valve body configured to open or close the expansion-side passage; a contraction-side valve body configured to open or close the contraction-side passage; an expansion-side back-pressure chamber configured to bias the expansion-side valve body; a contraction-side back-pressure chamber configured to bias the contraction-side valve body; a communicating channel that communicates with the expansion-side back-pressure chamber through an expansion-side resistance element, the communicating channel communicating with the contraction-side back-pressure chamber through a contraction-side resistance element; an expansion-side pressure introduction passage that connects the expansion-side chamber with the contraction-side back-pressure chamber; a contraction-side pressure introduction passage that connects the contraction-side chamber with the expansion-side back-pressure chamber; a regulating passage connected to the communicating channel; and a solenoid pressure control valve provided in the regulating passage to control a pressure in the upstream of the regulating passage. An expansion-side load for biasing the expansion-side valve body by virtue of the pressure of the expansion-side back-pressure chamber is larger than a contraction-side load for biasing the contraction-side valve body by virtue of the pressure of the contraction-side back-pressure chamber.",
  "title": "HYDRAULIC SHOCK ABSORBER"
}