Method and apparatus for verifying perpendicularity of concrete test specimen
US10551161B2 · kind B2 · utility
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Key dates
| Filing date | Apr 6, 2017 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Nov 7, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B5/285
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A perpendicularity verification device is provided for verifying perpendicularity of a concrete test specimen in a testing machine. The device comprises a unitary planar sheet. The sheet has an elongate vertical straight side edge and a horizontal straight bottom edge. The side and bottom edges are perpendicular to one another. A corner notch is provided between the side and bottom edges. In use, the bottom edge rests on a platen of the testing machine so that the notch circumvents a retaining cup of the testing machine and the vertical edge rests against the test specimen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.