| 摘要 |
A pneumatic tube carrier system having an air tube connecting two stations and through which a carrier is moved, a supply of air for supplying air under pressure or under vacuum to propel the carrier between the stations and air pressure means to cause the air in the tube to assume a pressure close to atmospheric pressure at the exit end of the tube as the carrier approaches the exit end to cause the carrier to travel slowly along the exit part of the tube as the carrier reaches the end part of the tube.
|
