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:
Mar. 16, 2021
Filed:
Aug. 06, 2018
Haier Us Appliance Solutions, Inc., Wilmington, DE (US);
Ryan James Scheckelhoff, Louisville, KY (US);
Aaron Lee Welch, Louisville, KY (US);
Haier US Appliance Solutions, Inc., Wilmington, DE (US);
Abstract
A washing machine appliance and a method of selectively draining a sump of the washing machine appliance at the start of an operating cycle is provided. The method includes determining that the drain pump assembly has drained wash fluid from the sump, e.g., by checking to see whether an empty sump flag has been set in the controller. In addition, the method includes determining that a water supply valve has not been opened since the wash fluid was drained from the sump and that a sump pressure exceeds a predetermined threshold pressure, e.g., indicating that water is in sump that was not intentionally added by the water supply valve. The drain pump assembly is then operated to perform a drain cycle at the beginning of a subsequent operating cycle.