Screwing element
US6240811A · kind A · utility
9Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/44
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a screwing element (1) for accommodation of a fastener head (5) of a fastener (6) there are provided jaws (3, 4) for seizing the fastener head. The jaws (3, 4) can be axially inserted into or withdrawn from the holder (2), wherein the jaws in the withdrawn position can be pivotably forced apart into open position. At their free end the jaws are provided with incisions (15, 16) and, adjoining these, with gripper-like parts (17, 18) jutting outwardly toward the central axis for the purpose of engaging mechanically and/or frictionally with the fastener head (5) from behind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.