Brush – broom – and mop making – Processes
Reexamination Certificate
2005-04-19
2011-10-04
Carter, Monica S (Department: 3727)
Brush, broom, and mop making
Processes
C015S207200, C015S167100, C300S002000
Reexamination Certificate
active
08029069
ABSTRACT:
The present invention provides a method of manufacturing a toothbrush having needle-shaped bristles, and a toothbrush manufactured by the method. The toothbrush manufacturing method of the present invention includes the step of partially tapering ends of bristles, which are made of polyester and are set in a toothbrush body, through a physical grinding process, and the step of completing of a process of tapering the partially tapered bristles by immersing the partially tapered bristles in a chemical. The present invention makes it possible for toothbrush bristles to be tapered through a simple process. Furthermore, the present invention solves conventional difficulties occurring in tapering bristles after setting them in toothbrush bodies.
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Kwon Sung-Hwan
Kwon Sung-Wook
Kwon Young-Jun
Carter Monica S
Egbert Law Offices PLLC
Newton Stephanie
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