Test specimen grip apparatus
US4888995A · kind A · utility
Inventor
Key dates
| Filing date | Nov 10, 1988 |
| Grant date | Dec 26, 1989 |
| Priority date | — |
| Expiry date | Nov 10, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0411
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Improvements in test specimen grip apparatus for tensile stress testing machines includes replaceable grip inserts that are able to accommodate wider than usual test specimens, particularly textile test specimens. The specimen grip means or grip inserts are threadedly retained on and may be substantially wider than their supporting jaw members. The grip housing, moreover, is provided with apertures for access to the threaded retainers for ease of grip insert removal and replacement. In addition, fluid actuation is preferably provided for the jaw members of the improved grip apparatus and a thumb screw is also disclosed for temporarily locking the jaw members in a selected open position, when mounting test specimens or removing and/or replacing grip inserts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.