Torque limiting bolt for power wrench tightening
US5108238A · kind A · utility
40Cited by
7References
3Claims
0Family size
Inventor
Key dates
| Filing date | Mar 20, 1991 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Mar 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/919
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque limiting bolt for tightening by a power wrench comprises a threaded shank, a tightening head at one end of the shank, a retaining head at the other end of the shank and a nut in threaded engagement with the threaded shank, the tightening head being an eight point head having sixteen external facets of equal size and uniform spacing around the circumference of the head. The power wrench is provided with oppositely rotatable inner and outer sockets engaging the driving head and the nut, respectively, the inner socket being an eight point socket having sixteen internal facets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.