Method and apparatus for testing relative hardness of horizontally displaced surfaces
US11460389B2 · kind B2 · utility
0Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2019 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Nov 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0033
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for testing relative hardness of horizontal concrete surfaces includes a weighted platform with scratching pins on a bottom surface of the platform. The pins are arranged in a trapezoidal arrangement. The apparatus is translated over the surface to determine if the surface has reached the desired level of hardness. If translation of the apparatus results in scratching of the surface, the desired level of hardness has not been reached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.