Torque limiting drawing holder nut wrench
US5287775A · kind A · utility
18Cited by
6References
2Claims
0Family size
Inventor
Key dates
| Filing date | Sep 18, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Sep 18, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25G1/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This drawing holder nut wrench is made up of a rounded hand grip, a socket body, a socket, and a way to limit torque. The torque is limited by the small size of the hand grip. The hand grip has smoothly rounded projections on it to give a comfortable grip and a shallow mortise in its top shaped to match and aligned with the socket beneath it. The mortise reveals the orientation of the socket beneath without having to turn the wrench over to look at the socket itself. The socket has a generally elongated hexagonal cross section and is a straight sided hole cut upwardly into the bottom of the socket body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.