Apparatus for determining microhardness
US4820051A · kind A · utility
36Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1986 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Aug 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0641
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The microhardness of a specimen is determined by measuring (1) the penetration depth of an indenter which is forced into the specimen, and (2) the load applied to the indenter. The load which is applied to the indenter is preferably measured by an electrobalance. In order to detect the penetration depth of the indenter into the specimen, an optical detector is integrally connected to cooperate with the indenter. A light beam is directed toward a predetermined position where a mirror reflects the light beam in a manner which varies in response to the penetration depth of the indenter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.