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. 09, 1993
Filed:
Dec. 14, 1990
Applicant:
Inventor:
Sidney V Engler, Scarborough, CA;
Assignee:
Liquid Carbonic Corporation, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25D / ; F25D / ;
U.S. Cl.
CPC ...
62266 ; 62 64 ; 62 65 ; 62265 ; 62374 ;
Abstract
A trap or seal system for effecting an air impervious seal for a food freezer, such as a cryogenic or mechanical freezer. The seal system includes a barrier forming a vapor-impervious partition and which has its bottom extending into a cryogenic bath. A conveyor system is used to transport articles through the cryogenic bath to a downstream cryogenic freezer. The combination of the barrier extending into the cryogenic bath forms an effective seal to prevent air infiltration into the cryogenic freezer.