Key shank with rectangular slot and keycase
US4909054A · kind A · utility
10Cited by
10References
14Claims
0Family size
Inventor
Key dates
| Filing date | Jul 8, 1985 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Jul 8, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8676
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Each key in a set of keys has a headless shank. A slotted opening through the shank is slightly larger than the shank so that any key can be installed over the shank of the active key to act as a wrench to turn the active key. In addition, any shank can carry two blades thereon, one on each end of the shank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.