{
  "$type": "site.standard.document",
  "description": "The filter element (10) has a torque transmission unit e.g. projection unit (18), formed on axial end of a cylindrical central tube and transmit torque from a tool to the filter element. A fastening unit (14) is formed on another axial end of the cylindrical central tube, and detachably fastens the…",
  "path": "/patents/994867",
  "publishedAt": "2012-12-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D46/0005",
    "MANN & HUMMEL GMBH [DE]"
  ],
  "textContent": "The filter element (10) has a torque transmission unit e.g. projection unit (18), formed on axial end of a cylindrical central tube and transmit torque from a tool to the filter element. A fastening unit (14) is formed on another axial end of the cylindrical central tube, and detachably fastens the element into a cylindrical support body (21) by plug-rotation movement of the fastening unit. The torque transmission unit is formed as a projection or recess having non-rotational symmetry relative to the cylinder axis of the cylindrical central tube. Independent claims are also included for the following: (1) a filter housing for receiving an air filter element (2) a filter arrangement for a portable hand-held power tool.",
  "title": "Air filter element, filter housing and filter assembly"
}