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:
May. 21, 1996
Filed:
Nov. 02, 1994
Applicant:
Inventors:
Edward F Kiczek, Long Valley, NJ (US);
Joseph P Cohen, Bethlehem, PA (US);
David J Klee, Emmaus, PA (US);
Robert J Shaw, Allentown, PA (US);
Assignee:
Air Products and Chemicals Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D / ;
U.S. Cl.
CPC ...
62266 ; 62380 ;
Abstract
The present invention is a tunnel freezer which incorporates a 'dual flow' design whereby the refrigerant is introduced at each end of the tunnel and withdrawn from the middle of the tunnel. A key to the present invention is that the dual flow design allows one to confine the pressure gradient for leaks between the ends of the tunnel where it will not be a concern since the item entrance and exit ports (which ports provide a ready access for leaks) are located at the ends of the tunnel.