The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1989
Filed:
Feb. 16, 1988
Heinz May, Pulheim, DE;
Leybold Aktiengesellschaft, Cologne, DE;
Abstract
A freeze-drying apparatus includes a freeze-drying chamber; a plurality of horizontally oriented, vertically superposed and vertically displaceable shelf plates for supporting thereon receptacles containing the product to be freeze-dried; a plate shifting rod projecting into the freeze-drying chamber and being operatively connected to the shelf plates; and a drive situated externally of the freeze-drying chamber and being connected to the plate shifting rod for moving the plate shifting rod in directions into and out of the freeze-drying chamber. There is provided a sterilizing device including a sterilizing chamber adjoining the freeze-drying chamber and accommodating that length portion of the plate shifting rod which is to be introduced into the freeze-drying chamber during the plate shifting operation.