Lock having longitudinal tumblers
US4790160A · kind A · utility
3Cited by
3References
12Claims
0Family size
Inventor
Key dates
| Filing date | Mar 2, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7757
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a lock comprising an assembly of identification plates provided with coding notches. A flat key, presenting a coded side, pushes the plates until their notches are brought into alignment, in which a feeler then comes into mesh by a rectilinear edge. The plates, continuing to slide under the thrust of the key, take along, via the feeler, a member for controlling the bolt. An alarm device indicates any introduction of an unsuitable key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.