Screw for fastening metal or plastic sections or plates onto a base
US6179538A · kind A · utility
10Cited by
0References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Apr 23, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B35/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a screw for fastening metal sections (10) to a substructure (11), a shank (2) is provided with a threaded portion (5) and a drive portion (3) for applying a driving device. The portion of the shank (2) adjacent to the drive portion (3) flares conically toward the drive portion (3). The thread (5) engages in the substructure (11), whereby the conical portion (6) is pulled into contact with the section (10) and presses it against the substructure (11). By virtue of appropriate friction, the torque is increased to an appropriate level, and so torque-dependent stopping of the driving action can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.