Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With mating connector which receives panel circuit edge
Patent
1992-09-15
1994-01-25
Eley, Timothy V.
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With mating connector which receives panel circuit edge
439 17, 439 86, 439630, H01R 909, H01R 2372
Patent
active
052811484
ABSTRACT:
A connector for interfacing a circuit resident on a printed circuit board having rows of externally accessible contact pads on a face of the board with a circuit resident on a portable card having rows of externally accessible contact pads on a face of the card has independently biased ball bearing contacts which assure positive, self-cleaning, self-sealing, self-adjusting electrical contact between the circuits.
A flat base has rows of apertures therethrough spaced for alignment with the pads of the board when the base is laminarly juxtaposed on the face of the board. Sinks connect the apertures in rows and the conductive ball bearings are retained in each of the apertures by annular shoulders on the apertures. Strips of elastomer formed of layers of conductive and dielectric materials are snugly seated in each sink with the layers transverse to the rows. The strips bias the ball bearings against the shoulders when the base is laminarly juxtaposed on the face of the board. Feet and bosses on the connector engage with sockets and dimples on the board to rigidly connect the base to the board with the strips in abutment with the rows of pads on the board.
A housing fixed to the base receives, aligns and holds the card in laminar juxtaposition against the ball bearings so that discrete conductive paths are defined by aligned card pads, ball bearings, elastomer layers and board pads.
REFERENCES:
patent: 4882657 (1989-11-01), Braun
patent: 4931622 (1990-06-01), Ohtsuki et al.
patent: 4993957 (1991-02-01), Shino
Eley Timothy V.
Nguyen Khan V.
Trakker, Inc.
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