Needle-shaped bristle and method of manufacturing the same
US8136889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2006 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Jun 15, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA46D1/0284
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a needle-shaped bristle and a method of manufacturing the needle-shaped bristle. The manufacturing method of the present invention includes the steps of cutting and removing a packing sheet, which is wound around a bundle of bristles, by a length ranging from 30 mm to 50 mm from a first end thereof, and grinding first ends of the bristles using a rotating grinder. The manufacturing method further includes steps of packing the first end of the bundle of bristles, from which the packing sheet is removed, using a packing sheet, cutting the bundle of bristles to a length ranging from 22 mm to 32 mm, and immersing a second end of the cut bundle of bristles, thus tapering second ends of the bristles. The needle-shaped bristle has an advantage of realizing a reduction in the proportion of defective products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.