{
  "$type": "site.standard.document",
  "description": "On the cover plate (8) of a roll bellows (4) is mounted an ultrasonic transmitter/receiver (14). A stop buffer (28) mounted on the piston (10) forms a two step reflector. The first step (16) acts as the target reflector and the second, the reference reflector (26) is formed by the base of a blind…",
  "path": "/patents/1105044",
  "publishedAt": "2002-04-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60G11/27",
    "CONTITECH LUFTFEDERSYST GMBH [DE]"
  ],
  "textContent": "On the cover plate (8) of a roll bellows (4) is mounted an ultrasonic transmitter/receiver (14). A stop buffer (28) mounted on the piston (10) forms a two step reflector. The first step (16) acts as the target reflector and the second, the reference reflector (26) is formed by the base of a blind hole (20), forms. The instantaneous clear height of the bellows is then given by the equation:- starget - ttarget x sref/(tref - ttarget) where: s= clearance to transmitter/receiver t = propagation time of sound beam The figure shows a section through a roll bellows to the present invention. bellows 4 cover plate 8 piston 10 step 16 blind hole 20 reference reflector 26 stop buffer 28",
  "title": "Vehicle air suspension system with ultrasound measuring arrangement"
}