Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Reexamination Certificate
1999-04-27
2001-02-06
Witkowski, Stanley J. (Department: 2837)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
C439S857000
Reexamination Certificate
active
06183268
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to electrical connectors and more particularly to high-density electrical connectors and electrical receptacle contacts therefor.
BACKGROUND OF THE INVENTION
High-density electrical connectors for electrically connecting a processor board on which a microprocessor and memory devices are mounted to a mother board are known. The high-density electrical connectors include a plug housing matable with a receptacle housing, each of which is electrically connected to a processor board and a mother board. The plug housing has rows and columns of blade contacts and the receptacle housing has rows and columns of receptacle contacts having fork contact sections whereby the fork members thereof are located in a plane thereby operating as cantilever contact members reciprocally movable within the plane.
The blade contacts and receptacle contacts provide a large number of electrical interconnections therebetween in a very small area. The manufacturing of the contacts and the housings, the assembling of the contacts in their respective housings and the mating therebetween is very important regarding the manufacturing, assembling and mating tolerances. This is especially true with regard to the fork contact sections of the receptacle contacts. Moreover, the contact forces between the mating of the fork contact sections and the blade contact sections of the blade contacts is affected by virtue of the cantilever operation of the fork contact sections of the fork members. The tolerance problems of the fork contact sections and blade contact sections can result in less than acceptable electrical connections for optimum operation of the microprocessors and memory drives.
It is therefore very important to provide matable high-density electrical connectors that overcome the tolerance problems described above and that will effect optimum electrical connections between the electrical contacts thereof.
SUMMARY OF THE INVENTION
An electrical connector for interconnecting circuit boards comprises a first electrical connector and a second electrical connector; the first electrical connector including a first dielectric housing, an array of electrical blade contacts mounted in the first dielectric housing; the second electrical connector including a second dielectric housing; an array of electrical receptacle contacts mounted in the second dielectric housing at an angle relative to the blade contacts for electrical connection with the blade contacts, and each of the receptacle contacts having hook-shaped fork members extending outwardly from a base member and hook sections bent away from each other defining a lead-in for a blade contact section of a blade contact as well as a controlled gap at the mating tip to be electrically connected therewith.
REFERENCES:
patent: 3693139 (1972-09-01), Assmus et al.
patent: 3867008 (1975-02-01), Gartland, Jr.
patent: 5049511 (1991-09-01), Yu
patent: 5902136 (1999-05-01), Lemke et al.
patent: 5903059 (1999-05-01), Bertin et al
patent: 5928003 (1999-07-01), Kajinuma
Consoli John Joseph
Fedder James Lee
Sipe Lynn Robert
The Whitaker Corporation
Witkowski Stanley J.
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