Continuously connected fastener stock and method of manufacturing the same
US7308983B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S206/82
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Continuously connected fastener stock and a method of making same. The method, in one embodiment involves providing a rotating molding wheel, the wheel being provided with a peripheral impression comprising a pair of peripherally-extending side members interconnected by a plurality of cross-links. Molten plastic is extruded into the peripheral impression of the wheel, with a layer of controlled film overlying the peripheral impression. The molten plastic is then allowed to solidify. A knife in substantially elliptical contact with the peripheral impression is then used to skive excess plastic from the rotating molding wheel. The knife is provided with a pair of cut-out portions along its bottom edge, each cut-out portion being aligned with one of the peripherally-extending side members so as to augment the transverse cross-sectional size thereof. The continuously connected fastener stock thus formed is then removed from the rotating molding wheel. The fastener stock includes in one embodiment first and second side members each being generally circular in cross-section and a plurality of cross-links each having a flat surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.