Self-drilling, self-countersinking fastener
US10662994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Feb 28, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B25/106
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A self-drilling, self-countersinking fastener is provided that includes a shaft, a countersunk head located at a first end of the shaft, and a tapered point located at an opposite end of the shaft. A thread integrally extends from the shaft and extends along at least a portion of a length thereof. The countersunk head includes a frustoconical region having a first, smaller diameter in a shaft connection region and a second, larger diameter at a second end defining an edge area of the head. A plurality of radially extending ribs are located on the frustoconical region and extend from an area of the first, smaller diameter to a respective radially outer rib end spaced radially inwardly by a distance X from the edge area of the head. A respective cutting edge is located on each of the ribs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.