Tension load testing machine
US5265476A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Feb 12, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A testing device for testing lifting equipment and accessories such as slings, shackles and the like has a longitudinally extending frame with left and right sides, each parallel to the other and to rails positioned between the frame sides. Moving carriages travel the rails to a desired position apart, such as for testing a sling of a certain length. The carriages have retractable bearing members that can engage the frame, enabling each carriage to anchor its position for testing. Sets of powered rams move the carriages apart when an accessory to be tested is attached at its ends to the two carriages. The rams are sized so that the first set has greater travel for initial stretching while the second set has higher loading capability for high end loading after stretching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.