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:
Jun. 29, 1976
Filed:
Apr. 01, 1975
Applicant:
Inventor:
Egbert deVries, Kettering, OH (US);
Assignee:
Quad Corporation, Highland Park, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D / ;
U.S. Cl.
CPC ...
62454 ; 62DI / ;
Abstract
A refrigerated chamber or building having an upper crawl space above the ceiling wherein the crawlspace is maintained under a negative pressure in order to provide an outflow of refrigerated air through the insulation into the crawlspace. This serves to prevent the inflow of warm air into the upper portions of the refrigeration chamber, which normally would have a negative pressure, with accompanying harmful moisture precipitation in the insulation.