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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.:

US 11168425 B1

PDFFull Text
Date of Patent:
Nov. 09, 2021

Filed:

Sep. 28, 2017

Washing machine and method of controlling the same

Applicant:

Lg Electronics Inc., Seoul, KR;

Inventors:

Hoonbong Lee, Seoul, KR;

Minho Jang, Seoul, KR;

Jaegwang Bae, Seoul, KR;

Assignee:

LG ELECTRONICS INC., Seoul, KR;

Attorney:

KED & Associates LLP

Primary Examiner:

Jason Y Ko

Int. Cl.
CPC ...
D06F 35/00 (2006.01); D06F 34/18 (2020.01); D06F 37/26 (2006.01); D06F 39/04 (2006.01); D06F 39/08 (2006.01); D06F 37/22 (2006.01); D06F 39/14 (2006.01); D06F 37/06 (2006.01); D06F 37/30 (2020.01); D06F 37/38 (2006.01); D06F 39/02 (2006.01); D06F 39/00 (2020.01); D06F 23/02 (2006.01); D06F 33/00 (2020.01); D06F 34/28 (2020.01);
U.S. Cl.
CPC ...
D06F 34/18 (2020.02); D06F 23/02 (2013.01); D06F 33/00 (2013.01); D06F 34/28 (2020.02); D06F 37/06 (2013.01); D06F 37/22 (2013.01); D06F 37/266 (2013.01); D06F 37/304 (2013.01); D06F 37/38 (2013.01); D06F 39/008 (2013.01); D06F 39/022 (2013.01); D06F 39/045 (2013.01); D06F 39/085 (2013.01); D06F 39/087 (2013.01); D06F 39/088 (2013.01); D06F 39/14 (2013.01); D06F 2202/04 (2013.01); D06F 2202/065 (2013.01); D06F 2202/085 (2013.01); D06F 2202/12 (2013.01); D06F 2204/065 (2013.01); D06F 2204/084 (2013.01); D06F 2204/088 (2013.01); D06F 2222/00 (2013.01);
Abstract

An amount of laundry that is introduced into a washing machine is determined by identifying gravitational and inertia forces applied during the operation of a motor, whereby it is possible to precisely calculate the amount of laundry and to minimize the effects of the initial position of the laundry and the movement of the laundry. In addition, the current value of the motor that is operated is used to measure the amount of laundry without a sensor. Furthermore, the amount of laundry is measured at the rotational speed of the motor at which the laundry clings to the drum, whereby it is possible to minimize error due to the movement of the laundry to thus improve accuracy. Moreover, it is possible to determine the amount of laundry within a short time. Consequently, it is easy to commence the spin-drying operation, thereby reducing washing time and saving energy.

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