Mailing machine having a user interface controller safety interlock to provide protection from hazardous voltages
US6606226B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Mar 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00258
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A mailing machine that includes a docking system for the User Interface Controller (UIC) that provides a safety interlock to protect the user from accessing potentially hazardous voltages when the UIC is removed is provided. A docking board provides a connection between the mailing machine and the UIC. The UIC mates with a docking connector on the docking board. Potentially hazardous signal levels pass through a relay on the docking board to the docking connector. A supply voltage for the relay's coil passes through docking board to the UIC and back to the relay on the docking board. If the UIC is removed, the supply voltage for the relay's coil will be removed, causing the relay to open and preventing any of the potentially hazardous signals from being transmitted to the docking connector on the docking board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.