Key operated mechanism for producing coded signal combinations for selecting a function of a multifunctional device
US4788623A · kind A · utility
11Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Dec 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7904
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
This invention pertains to a key operated mechanism for producing coded signal combinations for selecting a function of a multifunctional device. The mechanism includes a plurality of magnetically operated switches arranged along a key guide. The key includes magnets specifically positioned for interaction with the magnetically operated switches in accordance with a code diagram. Closing of the switches sends signals to a code signal user, which if the signals are enabling activates an associated machine such as a franking machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.