Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
1999-10-04
2001-06-26
Bradley, Paula (Department: 2833)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S946000, C361S735000, C361S737000
Reexamination Certificate
active
06250965
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to an apparatus for reading chip cards with at least one channel receiving a chip card and having at least one read head, the apparatus being detachably insertable into a receiving shaft intended for receiving modules in a computer, whereby in the channel for receiving at least one chip card two back limiting walls are provided in two different planes disposed at different distances from the opening of the channel so that two chip cards disposed directly one above the other are insertable into the channel by different lengths.
BACKGROUND OF THE INVENTION
The prior art shows a plurality of different chip cards which are used for credit purposes, for telephoning or for security tasks and information transmission. The chip cards usually have standard credit card format and are read in chip card readers designed in many different ways. Separate chip card readers are known for this purpose which are insertable into a receiving shaft in a computer to transfer chip card data to the computer. However, it is necessary or advantageous for diverse applications to connect two separate chip cards with a computer and make a connection between the particular cards.
It is known from EP 0 696 010 A1 to use two chip cards simultaneously with a chip card reader, the cards being insertable into the reader at different depths. The two cards are also insertable into a common receiving channel in which a projection is provided to cause defined positioning of the cards within the receiving channel. However, it can happen that a first inserted card gets caught on the projection, thereby impeding the insertion process.
GB 2 298 743 A discloses a chip card reading apparatus of the abovementioned kind. In this known apparatus as well; however, when one chip card is inserted into the corresponding channel there is always a possibility of the card getting caught on the projection or on the shoulder of the limiting wall provided for another card, which can make an insertion process difficult and tedious and damage the card.
The problem of the invention is to provide a chip card reading apparatus which permits two chip cards to be inserted into a receiving channel in simple fashion.
SUMMARY OF THE INVENTION
This problem is solved according to the invention by a prestressing device which is so prestressed that upon insertion into the empty apparatus the lower of the two chip cards is pressed into the lower plane in the direction out of the plane of the upper of the two different planes, the prestressing device being disposed on the upper limiting wall of the upper of the two different planes.
Preferred developments of the invention are the subject of the subclaims.
REFERENCES:
patent: 5490792 (1996-02-01), Sugita
patent: 5679007 (1997-10-01), Potdevin et al.
patent: 6010066 (2000-01-01), Itou et al.
patent: 6097605 (2000-08-01), Klatt et al.
patent: 0 696 010 (1996-02-01), None
patent: 2 298 743 (1996-09-01), None
Bradley Paula
Ta Tho D.
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