Customizable electrical connector

Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – Within distinct housing spaced from panel circuit arrangement

Reexamination Certificate

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Details

C439S079000

Reexamination Certificate

active

06638079

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to electrical connectors, and particularly to an electrical connector which is customizable.
2. Description of the Related Art
An arrangement for joining several printed circuit boards is to have one printed circuit board serve as a backplane and other printed circuit boards, called daughter boards, connected through the backplane. The backplane is usually provided with many connectors. Conducting traces in the printed circuit board connect signal pins in the connectors so that signals may be routed between the connectors. The daughter boards also contain connectors that are plugged into the connectors on the backplane. In this way, signals are routed among the daughter boards through the backplane.
Continued advances in the design of electronic devices for data processing and communications systems have placed rigorous demands on the design of electrical connectors. Specifically, electrical connectors for electrically connecting the backplanes and the daughter boards need to have higher densities and pin counts for design advances which increase integration of solid state devices and which increase the speed of data processing and communication. However, the increased density and pin counts unavoidably add the difficulties of mounting the electrical connectors to the backplanes and/or the daughter boards and of mating the electrical connector on the daughter board with the electrical connector on the backplane. Even worse, every electrical connector is often designated for only one use, that is, when the application of one electrical connector is decided, for example, to transmit signals or signal plus power, the whole electrical connector including the insulative housing and the electrical contacts etc. must be replaced by another electrical connector designated for transmitting power if another application needs to transmit just power. This is cost and undesirable for customers because the high pin count and high density electrical connector requires a relatively expensive and complicated manufacturing procedure.
U.S. Pat. No. 5,975,921 issued on Nov. 2, 1999 discloses an electrical connector devoted to solve the problems of how to mount to a printed circuit board.
U.S. Pat. No. 6,220,896 issued on Apr. 24, 2001 is directed to an electrical connector using the stripline configuration to reduce the cross talk between signal contacts thereof.
U.S. Pat. No. 6,227,882 issued on May 8, 2001 discloses an electrical connector balancing the forces between electrical contacts thereof and of an electrical connector complementary therewith.
U.S. Pat. No. 6,299,484 issued on Oct. 9, 2001 discloses an electrical connector, a shielding plate of which is mechanically supported by and electrically connected with one of a column of electrical contacts thereof.
U.S. Pat. Nos. 6,179,663 and 6,206,729 issued respectively on Jan. 30, 2001 and Mar. 27, 2001 respectively disclose an electrical interconnect system having each of a first and a second electrical connectors thereof use multiple grounding methods to reduce or prevent spurious signals from interfering with high density contacts carrying high speed transmissions.
None of the electrical connectors of the above-mentioned patents addresses the problem of providing a customizable electrical connector. Therefore, an improved electrical connector is desired.
SUMMARY OF THE INVENTION
A major object of the present invention is to provide a customizable electrical connector comprising a plurality of inner printed circuit boards which are easy to be replaced when desired.
An electrical connector in accordance with the present invention comprises an insulative housing, a plurality of wafers accommodated in the insulative housing, and a plurality of inner printed circuit boards each comprising a mating portion and a mounting portion. Each wafer comprises an insulative wafer body, a plurality of signal contacts mounted to one side of the wafer body, and a grounding bus mounted to the wafer body and each comprising a plurality of fingers extending along the one side of the wafer body and a plurality of tabs extending along the other side of the wafer body. The mounting portion of each inner printed circuit board is detachably inserted between two adjacent wafers and electrically contacts with the signal contacts and fingers of one wafer and tabs of another adjacent wafer.


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