Fastener shank crossection utilizing non-circular constant breadth curves
US6375401B1 · kind B1 · utility
6Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Oct 20, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B39/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener includes a head and a threaded shank. The shank defines an inner periphery and the thread defines an outer periphery. The shank and the thread each have a generally polygonal crossection with at least five lobes separated by at least five convex surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.