Rotary tool
US7765898B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2008 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Sep 9, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
For accurate holding, easy attachment and detachment, and sufficient rotation force, a rotary tool has a holding and transmitting part 1 to hold a hexagonal column of a rotated body and give rotation force, comprising a recessed part 2, which has an inner face having an approximately regular triangle cross sectional shape, run-off parts 2a at corners of the triangle shape, and a uniform shape in depth direction, and plate springs 3, which are fixed at a bottom of the recessed part 2 and have pawl parts 3a at tips thereof positioned at the opening side of the recessed part 2, and the pawl parts 3a can be moved into the run-off parts 2a while contacting to three side faces of the hexagonal column H and generate spring force, when the hexagonal column H is inserted into the recessed part 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.