Torque transducing attachments for air-driven impact tools
US4597296A · kind A · utility
2Cited by
6References
22Claims
0Family size
Inventors
Key dates
| Filing date | Sep 11, 1984 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Sep 11, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/1456
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A torque transducing attachment (2) can be fastened to a air-driven impact tool (8) at its rear end. A shaft (20) in bearings (16) in a housing (12) has a torque transformable part (22) with integral bushes (24, 26) with apertures (29) on either side. The relative displacement under torque of the apertures (29) varies the amount of light transmitted from a stabilized LED source (36) to a photo detector (46) and the resulting signal is passed through frequency responsive network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.