Jack handle with means for limiting the torque which can be applied to a jack
US5301389A · kind A · utility
17Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1993 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Apr 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20864
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A jack handle which limits the torque that can be applied to a jack so as to prevent overload and injury. The jack handle has a reduced cross-sectional portion between the handle and the jack engaging portion so that the handle will break off at the reduced cross-sectional portion, thus, preventing overloading of the jack. A portion of the handle which does not break off is provided with a jack engaging portion so that the broken portion of the jack can be removed and the second jack engaging portion can be inserted into the jack to lower it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.