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:
Aug. 15, 1995
Filed:
Feb. 28, 1994
Applicant:
Inventors:
Kenneth Davis, Berwyn, IL (US);
Alvin Miller, Galesburg, IL (US);
Robert Wetekamp, Galesburg, IL (US);
Assignee:
Maytag Corporation, Newton, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25D / ;
U.S. Cl.
CPC ...
62155 ; 62234 ;
Abstract
Control of defrost cycle initiation in a refrigeration apparatus is based on the difference between the last two defrost times, taking into account the sign of the difference so that the increase or decrease in the time between defrosts corresponds to the trend in defrost times rather than on any particular defrost time or the average of defrost times. A variety of limits are included to ensure that the time between defrosts is reactive to sudden aberrational changes in defrost times, and does not exceed minimum or maximum values.