Method and device for tightening joints
US8485273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2009 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Apr 2, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/147
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An electric assembly device for tightening of fastener includes a housing and a rotation. motor which is drivingly connected to an output shaft. The output shaft has a forward portion extending out of the housing, and is adapted to carry a coupling device for releasable coupling with a fastener during tightening, which is to be performed along a first rotation axis. The device is adapted to determine an angular displacement of the housing with respect to the first rotation axis during tightening of the fastener, and to control the rotation speed of the motor during tightening based on the determined angular displacement of the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.