Dual color coded sewing machine needles
US4117791A · kind A · utility
18Cited by
0References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1977 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Dec 14, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD05D2305/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dual color coding system is disclosed for sewing machine needles in which the color appearing on one area of the needle denotes the needle type, whereas that appearing on another area denotes the needle size. A dye which leaves no discernable surface coating is applied to the needle shank to denote one of the characteristics, preferably needle type; whereas a narrow band of pigmented material is applied as a surface coating over the dye colored surface at the juncture of the needle shank and blade to denote another characteristic, preferably needle size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.