Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – Distinct contact secured to panel circuit
Reexamination Certificate
2000-05-05
2001-03-20
Luebke, Renee (Department: 2833)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
Distinct contact secured to panel circuit
Reexamination Certificate
active
06203338
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to the card edge connector assembly with ejectors to linearly install/eject the card thereinto/therefrom, and particularly to the interconnection system including at least a pair of opposite such card edge connectors in a head-to-head manner with a printed circuit board thereunder.
2. The Related Art
The copending parent application Ser. No. 09/016,144 filed Jan. 30, 1998, discloses a slanted conventional DIMM (Dual In-line Memory Module) type card edge connector with ejectors thereon for use with a card or memory module. Another copending parent application Ser. No. 09/270,380 filed Mar. 16, 1999, discloses a pair of so-called SO DIMM (Small Out-line Dual In-line Memory Modules) connectors arranged in a head-to-head manner.
Anyhow, the SO DIMM connector are generally used in the notebook computers, and the desktop computers still require the conventional DIMM connectors for use therewith due to the corresponding mechanical and electrical characteristic consideration. Moreover, because the contact arrangements of the conventional DIMM connector and of the SO DIMM connector are different from each other, there are still some problems requiring to be solved during setting an interconnection system including two opposite traditional DIMM connectors mounted on the corresponding printed circuit board.
Therefore, an object of the invention is to provide an interconnection system including a pair of DIMM connectors mounted on a printed circuit board in a head-to-head manner wherein such pair of DIMM connectors are of either slanted type or horizontal type while non-vertical type for lower profile consideration.
SUMMARY OF THE INVENTION
According to an aspect of the invention, a DIMM connection system includes a pair of non-vertical DIMM first and second connectors head to head positioned on a printed circuit board. Each of the connectors including an insulative housing defining a central slots for receiving the card therein. Two rows of pairs of contacts are positioned within the housing by two sides of the central slot for engagement with the card. A pair of ejectors are disposed at two opposite ends of the housing for ejecting the inserted card. The key in the slot of the first connector is aligned with that of the second connector in a transverse direction. The pair of contacts of the first connector are aligned with the corresponding pair of contacts of the second connector in the same transverse direction. A printed circuit board is positioned under the pair of connectors, and includes four rows of conductive pads thereon corresponding to the contacts of the first and the second connectors wherein for each set including four conductive pads respectively in the four rows and aligned with one another in the same transverse direction, the first conductive pad is electrically connected to the third conductive pad while the second conductive pad is electrically connected to the fourth conductive pad so that both the connectors share the same circuits on the printed circuit board.
REFERENCES:
patent: 5297966 (1994-03-01), Brennian, Jr. et al.
patent: 5387115 (1995-02-01), Kozel et al.
patent: 5779494 (1998-07-01), Ito et al.
Chung Wei Te
Hammond Briggitte R.
Hon Hai - Precision Ind. Co., Ltd.
Luebke Renee
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