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:
Oct. 24, 1995
Filed:
Jan. 07, 1994
Carleton E Jennrich, Welch, MN (US);
Richard H Adams, Red Wing, MN (US);
Rudolph O Marohl, Red Wing, MN (US);
Delaware Capital Formation, Inc., Wilmington, DE (US);
Abstract
A sealed system is provided for facilitating the transfer of material through a port in a barrier wall separating two different environments without contamination of the cleaner of the two environments by the dirtier. The system includes a door closing a port in the barrier wall in leak-proof sealed engagement. A transfer medium for containing or receiving the material to be transferred through the port is provided with a removable cover in leak-proof sealed engagement within a transfer medium ring connectable in leak-proof sealed engagement with a stationary ring defining the passage through the barrier wall which is closed by the door. Sealing rings are provided between the door and transfer medium cover, and between the transfer medium ring and stationary ring to ensure against passage of contaminants from one environment to the other. For certain pharmaceutical applications, a heating element is provided in the stationary ring to sterilize the interfaces between abutting parts.