Adaptor for adapting a working element to an end of a power tool shaft
US8827278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Jul 11, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/3406
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An adaptor for adapting a working element to an end of a power tool shaft. The adaptor includes a central hole passing through the adaptor and has a longitudinal axis, a driving end facing the end of the shaft, and a tool end facing the working element and having a protruding portion, wherein the driving end is provided with grooves, the grooves and bosses formed between the grooves are alternately arranged around the circumference of the driving end, and the bosses have side faces each facing the central hole and located on a plane passing through an edge of a regular polygon and parallel with the longitudinal axis. The adaptor can thus be used to adapt different kinds of working elements to various kinds of driving shafts having different shapes of shaft end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.