Method for ejecting a PCMCIA card from a housing
US5778521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1995 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Apr 13, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49124
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A housing and ejection mechanism for PCMCIA electronic "smart cards" is disclosed. The ejection mechanism comprises a pair of cooperating lever arms and springs. When a "smart card" is inserted into the housing, the two lever arms pivot into the housing, extending an ejection spring. As the spring is pulled back by means of the lever arms, insertion of the card requires only slightly more force than would be needed to connect a "smart card" with its socket were no spring present. Full insertion of the card leaves the two lever arms coupled, but with only one of the lever arms locked in position. When the user triggers the ejection process, the two levers are mechanically separated and one of them applies the full spring force to the "smart card", freeing it from its socket and starting to push it out of the housing. After the first arm frees the "smart card" from its socket, it frees the second lever arm from its latch. The two lever arms then cooperate to push the "smart card" further out of the housing. Once the ejection spring is fully released, a second small spring reunites the two levers, preparing the mechanism for the next insertion of a "smart card". As only a small amount…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.