{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
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  "description": "A simplified, pressure-variation preventing tank structure capable of preventing pressure variations in a gas phase portion resulting from temperature variations, without bringing stored liquid into contact with air. This pressure-variation preventing structure includes a breather bag (3) arranged…",
  "path": "/patents/1093445",
  "publishedAt": "2003-09-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/342",
    "SUMITOMO ELECTRIC INDUSTRIES [JP]"
  ],
  "textContent": "A simplified, pressure-variation preventing tank structure capable of preventing pressure variations in a gas phase portion resulting from temperature variations, without bringing stored liquid into contact with air. This pressure-variation preventing structure includes a breather bag (3) arranged in a gas phase portion (2) of a tank (1) and inflating/deflating in communication with outside air, and a manhole (21) to which the breather bag is attached to suspend in a gas phase portion, including a communication hole (22) for the breather bag to communicate with outside air. The breather bag (3) has air-blocking, acid-resistant and expandable characteristics.",
  "title": "PRESSURE FLUCTUATION PREVENTION TANK STRUCTURE, ELECTROLYTE CIRCULATION TYPE SECONDARY BATTERY, AND REDOX FLOW TYPE SECONDARY BATTERY"
}