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:
Jul. 14, 2015
Filed:
Jun. 23, 2011
Gregory A. Peterson, South Barrington, IL (US);
Thomas J. Sheahan, Oakwood Hills, IL (US);
Gregory A. Peterson, South Barrington, IL (US);
Thomas J. Sheahan, Oakwood Hills, IL (US);
Nidec Motor Corporation, St. Louis, MO (US);
Abstract
A method of operating a washing machine to detect unbalanced loads has been developed. The method includes operating a motor to rotate a tub holding a load at a first rotational rate that is below a threshold rotational rate, identifying a mass of the load, operating the motor to rotate the tub at a second rotational rate that is above the threshold rotational rate, identifying a power applied to the motor to continue rotation of the tub at the second rotational rate, obtaining an out of balance mass value from a memory with reference to the power applied to the motor, second rotational rate, and identified mass, identifying a maximum rate for the tub with reference to the out of balance mass value, and operating the motor to rotate the tub at a rate that is less than or equal to the maximum rate.