Device and method for testing the tension in stressed cables of concrete structure
US6880412B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Mar 8, 2000 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Mar 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device and method for testing the tension in a stressed cable of a concrete structure. The device includes a frame and a hydraulic jack mounted onto the frame. The hydraulic jack applies a force to the stressed cable and displaces the stressed cable laterally. A hook or clamp is connected to the hydraulic jack for grasping the stressed cable in order to apply the force thereto, and a dial gauge is mounted onto the frame for measuring the deflection of the stressed cable once the force has been applied. The amount of pre-stress within the stressed cable can be calculated by measuring the amount of deflection caused to the stressed cable by the force of the jack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.