Cotter having indicator device
US6869243B1 · kind B1 · utility
6Cited by
4References
9Claims
0Family size
Inventor
Key dates
| Filing date | Apr 6, 2004 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Apr 6, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7079
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A cotter is used for locking or latching tubes or extensions together, and includes a shank having a lower end, a handle attached to top of the shank, a ferrule slidably attached onto the shank and arranged between the handle and the lower end of the shank and having a portion applied with an indicating layer. A spring may bias the ferrule toward the handle, to have the handle to selectively shield the indicating layer of the ferrule, and to indicate whether the ferrule has been suitably biased toward the handle or not, and to indicate whether the tubes and the extensions have been safely locked or latched together or not.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.