Electric hand-operated grinder
US6004194A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Oct 6, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B23/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a hand-held electrical grinder with a tool holder (22) driven by a rotating eccentric plug (20) which, for receiving a grinding tool has a quick-action locking device (24) with locking elements (40, 41) fixed on the tool and tool holder sides and corresponding with each other, the locking elements (40) on the tool side are formed, on the one hand, by hooks (42) disposed on a circular line and, on the other hand, the locking elements (41) on the holder side are realized by means of a spring wire (43), which is bent in the shape of a ring, in order to transmit a greater output from the tool holder (22) to the (10). The spring wire (43) has a number of radially inward directed indentations (431) corresponding to the number of the hooks (42) on the tool side, which extend behind the hooks (42) on the tool side for locking the grinding tool (10) in.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.