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:
Oct. 26, 2021
Filed:
Oct. 07, 2019
Haier Us Appliance Solutions, Inc., Wilmington, DE (US);
Ryan James Scheckelhoff, Louisville, KY (US);
Ryan Ellis Leonard, Louisville, KY (US);
Haier US Appliance Solutions, Inc., Wilmington, DE (US);
Abstract
A washing machine appliance includes a sump for collecting wash fluid, a water supply valve for supplying wash fluid during a fill cycle, and a drain pump assembly for draining that wash fluid during a drain cycle. A controller is configured for monitoring the sump pressure using a water level detection system, detecting a fill sensing failure such as a slow pressure rise after the fill cycle, detecting a drain sensing failure such as a slow pressure drop during the drain cycle, and determining that the water level detection system is malfunctioning if the fill sensing failure and the drain sensing failure are detected.