Screw with two cut removing curved grooves
US6106208A · kind A · utility
24Cited by
6References
1Claims
0Family size
Inventor
Key dates
| Filing date | Sep 23, 1998 |
| Grant date | Aug 22, 2000 |
| Priority date | — |
| Expiry date | Sep 23, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B25/0078
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A screw with two cut removing curved grooves has a head and a shank with a helical threads. The shank has two lengthwise grooves partially overlapping with each other, when viewed projectively from the horizontal surface or from the vertical surface of the center line or axis of the screw.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.