Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
2001-11-20
2002-05-14
Ta, Tho D. (Department: 2833)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S696000, C439S687000, C439S906000, C439S945000, C361S737000
Reexamination Certificate
active
06386920
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention:
The present invention relates to a joint socket device for memory cards, and particularly to a socket device, which is possible for being inserted with a smart media card (SMC), a multimedia card (MMC), a secure digital memory card (SD) and a memory stick (MS) respectively.
2. Description of Related Art:
Usually, a portable personal apparatus such as a digital camera or a notebook computer is provided with a memory card for storing data. It is necessary to arrange a socket device to receive the memory card of the portable personal apparatus. The socket device provides a conduction part to connect with the memory card and a microprocessor in the portable personal apparatus. Referring to
FIG. 1
, a SMC
10
is a large card with a small thickness, a MMC
20
is smaller and thicker, a SD
30
has the same area as the MMC
20
but much thicker, and the MS
40
has the smallest width and the largest length with a largest thickness. Each of the four memory cards at a facial side thereof is barely attached with different numbers of connection pieces
101
,
201
,
301
,
401
. The connection pieces are passages for the memories in the memory cards in conjunction with foreign parts. Each of the connection pieces
101
of the SMC
10
has almost the same width as that of the respective connection piece
201
of the MMC
20
and a clearance between two neighboring connection pieces
101
is almost the same as that between two neighboring connection pieces
201
. The SD
30
has the connection pieces
301
thereof in a recess and a clearance between two adjacent ones for the 7 pieces at the middle section thereof is the same as that between two neighboring connection pieces
201
thereof. The connection pieces
401
of the MS
40
are also in a recess and provide a narrowest clearance between two adjacent ones thereof. All the four memory cards have a cut corner
102
,
202
,
302
,
402
respectively, the SD
30
further has a write protect switch
303
, and the MS
40
further has an anti-reversed insertion groove
403
. Because SMC
10
, MMC
20
, SD
30
and MS
40
provide a shape, size and the number of junctions thereof different from one another, the socket devices adapted to the preceding memory cards are different from one another in their configurations and in the number of conduction parts thereof. The conventional socket device is only made for one of the preceding memory cards and not for all kinds of memory cards so that it is inconvenient that more socket devices have to be offered in case of multiple types memory cards being used. In this way, more joints have to be arranged in the circuit of each conventional socket device and a large space has to be offered for the multiple socket devices too.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a joint socket device for memory cards, which is adapted to different types of memory cards to enhance the convenience while in use.
Another object of the present invention is to provide a joint socket device for memory cards, which offers less connection points and a less gross size thereof than the conventional ones having the identical functions.
REFERENCES:
patent: 5228874 (1993-07-01), Lin
patent: 5752857 (1998-05-01), Knights
patent: 6097605 (2000-08-01), Klatt et al.
patent: 6250965 (2001-06-01), Neifer
Kinpo Electronics Inc.
Nguyen Truc
Ta Tho D.
Troxell Law Office PLLC
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