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:
Nov. 16, 2010
Filed:
Dec. 10, 2004
Young-jun Kwon, Gyoha-myun 413-835 Paju, Gyunggi-do, KR;
Sung-wook Kwon, Dongjak-gu, 156-861 Seoul, KR;
Sung-hwan Kwon, Dongjak-gu, 156-861 Seoul, KR;
Young-Jun Kwon, Gyoha-myun 413-835 Paju, Gyunggi-do, KR;
Sung-Wook Kwon, Dongjak-gu, 156-861 Seoul, KR;
Sung-Hwan Kwon, Dongjak-gu, 156-861 Seoul, KR;
Other;
Abstract
The present invention provides a method of manufacturing a toothbrush with needle-shaped bristles. The method includes the step of setting needle-shaped bristles, partially tapered by being immersed in a chemical, in a head part of a toothbrush body. The method further includes the step of grinding the needle-shape bristles using a drum grinder having protrusions () such that end points of the bristles range from 0.01 to 0.03 mm in thickness and tapered portions of the bristles range from 3.5 to 8 mm in length. A toothbrush, in which needle-shaped bristles having end points of 0.03 to 0.05 mm in thickness and tapered portions of 3.5 to 10 mm in length are set, can be manufactured using the method of the present invention. In the present invention, because a manufacturing process is simplified, the required production time and a defective proportion are markedly reduced.