Torque detecting apparatus
US4446746A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Oct 9, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/1421
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for detecting torque transmitted between two rotary members. A driving member and a driven member are connected via a transmission spring, permitting relative angular displacement therebetween. On either one of the two rotary members a wheel disk having a number of slits arranged in a circle is provided. A detector, such as a photocoupler, for detecting the slits is disposed on a frame adjacent to the wheel disk. A shutter disk with a shutter portion for partially covering the slits is attached to the other rotary member at an opposed posture to the wheel disk. The number of slits detected by the detector is varied according to the relative angular displacement between the driving member and the driven member while they are in rotation, and the torque between both rotary members may be numerically determined from the number of slits detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.