Front system of a printed circuit board assembly having an integrated push-button element for active-passive switching
US5940276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K7/1409
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The front system has an upper and a lower end piece (5) which are fastened to the upper and lower front corner region (3), respectively, of the printed circuit board assembly (3). An upper and/or a lower lever pull handle (19), which is fitted to the upper and/or lower end piece respectively, is used for levering the printed circuit board assembly into and out of the mounting rack. A latching mechanism (25) is provided to fix the lever pull handle in the appropriate position when the printed circuit board assembly has reached the point where it has been fully inserted into the mounting rack. A push-button element (31) is integrated in the upper and/or lower end piece. When the lever pull handle is in its fixed position, the push-button element may be depressed to thereby act upon the appropriate lever pull handle, thereby actuating an external, electrical switching element. The electrical switching element, in turn, electrically enables and disables the printed circuit board assembly. The invention has the advantage of allowing the push-button element, as a result of its integration in a lower or an upper end piece, to be brought into an exactly definable position, so that even ext…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.