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.

Date of Patent:
Dec. 17, 2013

Filed:

Aug. 05, 2011
Applicants:

Doo Young Ryu, Suwon-si, KR;

Ja Young Kim, Suwon-si, KR;

Ito Michiaki, Suwon-si, KR;

Myung Sun Kang, Suwon-si, KR;

Inventors:

Doo Young Ryu, Suwon-si, KR;

Ja Young Kim, Suwon-si, KR;

Ito Michiaki, Suwon-si, KR;

Myung Sun Kang, Suwon-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06F 25/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A drum type washing machine including a housing, a spin tub, and a ball balancer coupled to the spin tub, the ball balancer including a first plastic member and a second plastic member joined to each other to form an annular-shaped race, the first plastic member including a first side wall, a second side wall and a connecting wall to form a three-sided annular-shaped structure having an open side, and the second plastic member adapted to cover the open side, the three-sided annular-shaped structure having a U-shaped cross-section with a first rounded inside corner formed between the first side wall and the connecting wall and a second rounded inside corner formed between the second side wall and the connecting wall. A radius of curvature of each of the first and second rounded inside corners is greater than a radius of curvature of opposite diagonal inside corners of the annular-shaped race.


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