Torque indicator
US4808976A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1988 |
| Grant date | Feb 28, 1989 |
| Priority date | — |
| Expiry date | Jun 27, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A torsion member (12) has opposing protruding end elements (4, 6) configured for transmitting torque therebetween. A first contact mechanism (20, 26) is mounted to a surface (10) of one end (4) of the torsion member (12). The first contact mechanism includes a movable contact (26') disposed between the end elements (4, 6) of the torsion member. A second contact mechanism (18, 28) is mounted to a surface (11) of the other end element (6) of the torsion member (12). The second contact mechanism includes a movable contact (28') disposed near the first contact (26'). The first contact (26') and second contact (28') move toward each other whenever torsion is applied to the torsion member (12). Means (30, 40) are provided for changing the distance between the first and second contacts (26', 28'), and for producing a signal whenever the first and second contacts touch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.