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:
Sep. 15, 1998
Filed:
May. 28, 1997
Do Weon Kim, Seoul, KR;
Sung Jae Shin, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A washing machine having a ball balancer is provided. The washing machine comprises: an external cabinet; an outer tub suspended inside the external cabinet; a rotary tub rotatably installed inside the outer tub for containing the laundry therein; and a ball balancer installed at a circumference of the rotary tub for balancing a rotation of the rotary tub. The ball balancer comprises: a casing installed at the circumference of the rotary tub and having at least one annual chamber formed therein; a multiplicity of balancing balls contained in the annual chamber of the casing; and a viscous fluid contained in the chamber of the casing. Here, the annual chamber of the casing is formed at the bottom of the annual chamber with at least one groove for receiving the balancing balls over a predetermind circumferencial length, and the groove has an inclined radial outer wall for guiding a upward movement of the balancing balls, as a rotational speed of the rotary tub increases. Accordingly, when the rotary tub rotates at a low speed, the increase of vibrations of the rotary tub is prevented.