Geometrical instruments
Patent
1979-03-05
1980-10-21
McQuade, John
Geometrical instruments
339258R, H01R 1311
Patent
active
042290651
ABSTRACT:
Disclosed is a female contact of unitary construction employing a torsion bar joined at one end to one of two opposing, spaced apart, elongated contact blades. The two blades have a relatively high spring rate and are forced apart when a male contact is inserted between the blades to provide the desired contact retention forces. One of the two contact blades is oriented edgewise with respect to the plane of a rigid opposing blade to provide a high spring rate in the direction of outward displacement. The outward displacement of the edgewise-oriented blade and hence the contact pressures applied thereby to the male contact are primarily a function of the torsional characteristics of the torsion bar to which it is joined. If desired, this contact pressure may be essentially doubled by providing two juxtaposed edgewise-oriented contact blades, each joined to a respective torsion bar.
REFERENCES:
patent: 3142891 (1964-08-01), Travis
patent: 3192498 (1965-06-01), Ruehlemann
patent: 3299396 (1967-01-01), Kinkaid
patent: 3713079 (1973-01-01), Dechelette
patent: 3732529 (1973-05-01), Weisenburger
patent: 4035049 (1977-07-01), McKee
patent: 4068917 (1978-01-01), Seidler
Harvey Hubbell Incorporated
McQuade John
Presson Jerry M.
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