Freeze drying system

• US 3,088,222 A
• Filed: 07/01/1959
• Issued: 05/07/1963
• Est. Priority Date: 07/01/1959
• Status: Expired due to Term

• Current Assignee: Frederick J. Moore, Robert C. Mace
• Original Assignee: Frederick J. Moore, Robert C. Mace
• Inventors: Mace, Robert C., Moore, Frederick J.
• Application Number:
  US03/824,261
• Time in Patent Office: 1,406 Days
• US Class Current: 34/92
• CPC Class Codes: F26B 5/06 the process involving freezing

Claims

1. APPARATUS FOR FREEZE-DRYING MATERIAL CONTAINING SUBLIMABLE FROZEN-STATE LIQUID, THE APPARATUS COMPRISING A SUBSTANTIALLY CLOSED VESSEL DEFINING AN ELONGATED SUBLIMATION CHAMBER AND ALSO DEFINING AN ELONGATED PRECIPITATION CHAMBER EXTENDING IN GENERALLY PARALLEL ADJACENT RELATION TO THE SUBLIMATION CHAMBER MEANS FOR AGITATING AN ELONGATED MASS OF SAID MATERIAL IN THE SUBLIMATION CHAMBER, THE PRECIPITATION CHAMBER OPENING INTO THE ADJACENT SUBLIMATION CHAMBER ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID ELONGATED MASS TO FORM AN ELONGATED VAPOR PASSAGE BETWEEN THE CHAMBERS, MEANS FOR HEATING THE MATERIAL IN SAID ELONGATED MASS, THE VESSEL HAVING A VAPORPRECIPTATING WALL AT LEAST PARTLY DEFINING THE PRECIPITATION CHAMBER, MEANS FOR CHILLING SAID WALL, AND A SUCTION LINE LEADING FROM THE INTERIOR OF THE VESSEL FOR MAINTAINING IN SAID CHAMBERS A PARTIAL VACUUM SUFFICIENT TO EXTRACT SUBLI-