Hardness testing apparatus provided with a safety stop device
US4262525A · kind A · utility
4Cited by
1References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 6, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Dec 6, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0204
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention refers to a hardness testing apparatus operating under great applied loads, for example up to 3,000 Kg. provided with a safety stop device preventing the main load application and/or returns the instrument to a rest position, when the workpiece to be tested is not exactly disposed under the reference plane in order not to be touched by the indentor, or when under the instrument an operator's hand is inserted accidentally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.