Fastening element setting device with setting indicator
US4811883A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Dec 21, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/188
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An explosive powder charge operated fastening element assembly setting device is used to drive a fastening element into a hard receiving material such as concrete, steel and the like. The device includes a striker piston transmitting driving force to the fastening element assembly. The forward end of the striker piston has a marking projection. If excessive driving energy is transmitted from the striker piston to the fastening element assembly, the marking projection forms an imprint in a guidance disk of the assembly. The extent of the imprint provides a gauge of the excessive driving force which results in unsatisfactory insertion of the fastening element. If an annularly-shaped marking projection is used, the imprint formed by it can be viewed from all sides of the fastening element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.