Accessible housing for electronic system
US4507744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Jul 19, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00233
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A secured housing for an electronic device having an electronic memory mounted therewithin is provided which has as access aperture which provides tamper proof security and electro-magnetic interference protection while permitting access to the memory for reading the information maintained in the memory. Opening of the access aperture disables the electronic device from further operation by unlatching a switch which disconnects the electronic device from its power supply while preventing relatching of the switch to reactivate the electronic device. Use of the access aperture provides a visible indication of access to the interior of the housing. In one embodiment of the invention, the electronic device is an electronic postage meter and the electronic memory is a nonvolatile memory containing postage accounting information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.