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:
Jul. 16, 1985
Filed:
May. 08, 1984
Applicant:
Inventor:
David J Klee, Emmaus, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
F25D / ;
U.S. Cl.
CPC ...
62 63 ; 62266 ; 62374 ; 62380 ; 236 49 ;
Abstract
An exhaust system for a cryogenic freezer is set forth wherein the system senses the temperature of an aperture in the freezer to detect any outward passage of cryogenic vapors and based upon that sensing, controllably operates an exhaust fan to remove such cryogenic vapors.