Penetration hardness tester
US5616857A · kind A · utility
29Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1996 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jan 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hardness tester is disclosed which conducts its hardness test through a penetrator impinging upon the surface of a test specimen. Enhanced accuracy and repeatability is achieved through the use of a closed loop system and directly mounting a load cell to the indentor, connecting a linear displacement transducer directly to the load cell and eliminating an elevating screw in initially positioning and applying load to the specimen to be tested.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.