Torque release wrench
US4019412A · kind A · utility
5Cited by
6References
12Claims
0Family size
Inventors
Key dates
| Filing date | Sep 12, 1975 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Sep 12, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/1427
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention described herein is a ratchet-type torque release wrench for the precise setting of the residual axial tension (clamping force) to be retained within a threaded fastening system under installation, wherein as the threaded fastening system's bolt attains a predetermined value of axial tension the manually perceptible spontaneous release of only a minor portion of the total torque applied to either the fastening system under installation signals to the installation operator the completion of the fastening system's installation sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.