| 摘要 |
<p>The device for cleaning dentures has a base plate and an upper arm between which is retained a container filled to a given level with a cleaning liquid. Supported on arms above the bottom of the tank is an air delivery tube extending upwards inside the centre of the container. Between its base and the arms, is a foil to carry the dentures. Air is discharged from the open bottom of the tube, to pass upwards through the liquid. Its top passes through a hole in a dished top plate which fits onto the rim of a cylinder inside the container, the latter supporting the tube. The top of the tube fits inside a cover with an inner spigot fitting inside a collar supported above a part of the tube forming a jet.</p> |
