Position-limit device with spring components for direct tensile test
US9574980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2016 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Feb 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0447
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for fixing a rock sample, the device including: a lower clamp and an upper clamp. The lower clamp includes: a lower connector connected to a bottom loading base, a lower end cap for fixing samples, a lower chain connecting the lower connector and the lower end cap, a first spiral spring, a first central position-limit mechanism, and a second central position-limit mechanism. The lower end cap includes: a first sample fixing groove and a first connecting segment. The upper clamp includes: an upper connector connected to a top loading base, an upper end cap for fixing the samples, an upper chain connecting with the upper connector and the upper end cap, a second spiral spring, a third central position-limit mechanism, and a fourth central position-limit mechanism. The upper end cap includes a second sample fixing groove and a second connecting segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.