Printed circuit board capable of being inserted and withdrawn on on-line status
US4200865A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1978 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | Jan 27, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/0746
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A printed circuit board loaded with an electronic circuit and constructed to be capable of being inserted in and withdrawn from a bus line on on-line status, in which the input to or the output from the printed circuit board is locked out in response to the presence of two conditions, one is the presence of a demand for insertion or withdrawal of the printed circuit board on on-line status and the other is the presence of such a condition that no information exchange is being made between the printed circuit board and other unit connected with the bus line, thereby releasing the electrical connection between the bus line and the printed circuit board so that the printed circuit board can now be inserted in or withdrawn from the bus line on on-line status.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.