Freeze Dryer

摘要

A freeze dryer comprises a chamber having a rectangular slot through which vials are inserted into the chamber. An assembly for loading and/or unloading the chamber comprises a transfer bar extending across the slot. The bar is pivotally attached at each end to first and second flat springs, each spring being wound on a respective rotatably mounted spool located proximate the slot. Drive means are provided for synchronously rotating the spools to effect movement of the bar into or out from the chamber and for selectively rotating the spools to raise or lower the bar.