Electric connection unit
US5762504A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R2201/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric connection unit includes a gas-tight housing to be put between a test board and a probe card located separately from each other. The housing has a plurality of pairs of contact pins each pair interconnected by a conductor wire and movably and gas-tightly inserted through holes formed in opposing walls of the housing, to be movable without being subjected to restriction of the conductor wire. A gas is introduced into the housing to push each pair of contact pins outwardly so that each pair of contact pins are brought into contact with corresponding conductive pads provided on test board and the probe card, with a constant contact pressure determined by a gas pressure. Even if there is variation in the projection length of the contact pins and in the distance to the conductive pads, all the contact pins can be brought into contact with corresponding conductive pads with a uniform contact pressure, with the result that an excellent and reliable electric connection can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.