Method of making a powder coated protected prong file fastener
US9839937B1 · kind B1 · utility
0Cited by
30References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2014 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Aug 6, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2258/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A prong style file fastener, and method of manufacturer, is disclosed which has a protective element to prevent damage to paper documents and personal injury. In one embodiment, the prongs of the fastener are covered with a powder coating which is melted thereon. In the case of the powdercoat covering, the production line uses a cam drive sprocket retractor system to release the line onto a takeup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.