Torque wrench testing devices and the like
US4376386A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1979 |
| Grant date | Mar 15, 1983 |
| Priority date | — |
| Expiry date | Nov 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L25/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Multiple range calibrating apparatus for checking the accuracy of torque wrenches and other force measuring instruments comprising a mechanism for applying torque to a torque receiving element connected between the instrument being checked and a force measuring device or instrumentality. The torque receiving element is connected to the measuring device by a novel linkage that is adjustable to vary the ratio of input torque to the force applied to the measuring device so that instruments of varying capacity or calibrated in different multiple measuring scales may be tested therewith. The multiple scales on the measuring device are related to the linkage ratios so that different units of torque may be indicated. This greatly enlarges the utilization range of such testers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.