Fastener and screw means therefor
US5762560A · kind A · utility
4Cited by
12References
3Claims
0Family size
Inventors
Key dates
| Filing date | Jan 29, 1997 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Jan 29, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B37/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The fastener comprises, in combination, a screw having a threaded shaft, and a fastening strip or sheet having a raised portion provided with an aperture being preformed to have an at least partly helical threadform-defining edge shaped and dimensioned to matingly receive the threaded shaft of the screw means. The crests comprising the threaded shaft of the screw means have an asymmetrical surface profile in the axial direction of the threaded shaft which enables the shaft to withstand greater applied torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.