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:
Dec. 07, 2021
Filed:
May. 31, 2019
Lg Electronics Inc., Seoul, KR;
Hyunseung Lee, Seoul, KR;
Sanghee Yoo, Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
A washing machine includes a cabinet, a tub disposed inside the cabinet to form a washing space in which washing water is filled, and a drum rotatably supported in the washing space for receiving laundry. The tub includes a first case coupled to a second case to form the washing space. A first coupling surface is formed along a periphery of an opened end portion of the first case and a second coupling surface is formed along a periphery of an opened end portion of the second case facing the first case. The second coupling surface is welded to the first coupling surface. A coupling protrusion protrudes along the first coupling surface and includes a protruding end portion welded to the second coupling surface. The coupling protrusion includes a main-coupling protrusion protruding along the first coupling surface and a sub-coupling protrusion parallel to and spaced apart from the main-coupling protrusion.