Geometrical instruments
Patent
1984-06-29
1985-08-13
McQuade, John
Geometrical instruments
339 17M, 339176MP, H01R 909
Patent
active
045346062
ABSTRACT:
Daughter board to mother board connector comprises an elongate dielectric housing having perpendicular faces which mount against respective boards over parallel rows of contact pads. Housing has a plurality of parallel planar recesses which open on the faces and receive flat contacts. Contacts have rectangular apertures which align with an axial opening through the housing. An insulated keying shaft having a square profile is contained in the opening and fits closely through the apertures so that rotating the shaft effects rotation of the contacts. Each contact is a plate cam having lobes which wipe across the pads as the shaft rotates causing the cam to translate transversely of the axis of the shaft as parallel walls of the aperture slide across parallel surfaces of the shaft. A spring nested in each recess opposite the faces deflects resiliently to cause contact pressure which is enhanced by an additional lobe facing the spring.
REFERENCES:
patent: 3430182 (1969-02-01), Blanche
patent: 3636499 (1972-01-01), Winklebleck
patent: 4445735 (1984-05-01), Bonnefoy
patent: 4451818 (1984-05-01), Grabbe et al.
patent: 4461522 (1984-07-01), Bakermans et al.
patent: 4469389 (1984-09-01), Grabbe et al.
patent: 4477133 (1984-10-01), Cosmo
patent: 4488766 (1984-12-01), Cosmo
IBM Technical Disclosure Bulletin, vol. 4, No. 9, 2/1962, "Circuit Board Assembly", Rice et al.
AMP Incorporated
Faller F. Brice
McQuade John
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