Plug-in jack card for normally closed contacts
US5199878A · kind A · utility
128Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1990 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Nov 15, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus is disclosed for providing access to plurality of telecommunication lines. The apparatus includes a frame which carries a plurality of normally closed contacts. The telecommunication lines are terminated on the normally closed contacts. A plurality of modules are provided to be releasably attached to the frame with electrical circuit elements on the modules engaging the normally closed contacts to open the contacts and create a new signal path through the module upon insertion of the module into the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.