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. 10, 2020
Filed:
Aug. 06, 2018
Haier Us Appliance Solutions, Inc., Wilmington, DE (US);
Aaron Lee Welch, Louisville, TX (US);
Haier US Appliance Solutions, Inc., Wilmington, DE (US);
Abstract
A washing machine appliance includes a sump for collecting wash fluid and a drain pump assembly for selectively draining that wash fluid in response to sump pressures measured by a water level detection system. Specifically, a controller is configured for operating the drain pump assembly to perform a drain cycle and obtaining a sump pressure after the drain cycle. A variable flag is set to a first state if the measured pressure exceeds a predetermined threshold pressure, which indicates that a certain amount of wash fluid is present in the sump. During a subsequent operating cycle, the drain pump assembly will be operated at the start of the cycle only if the variable flag was set to the first state during the prior operating cycle.