Electricity: conductors and insulators – Conduits – cables or conductors – Conductor structure
Reexamination Certificate
1998-10-09
2001-03-20
Kincaid, Kristine (Department: 2831)
Electricity: conductors and insulators
Conduits, cables or conductors
Conductor structure
C174S126200
Reexamination Certificate
active
06204452
ABSTRACT:
BACKGROUND OF THE INVENTION
Among the technological developments regarding the automotive industry, there are processes focused towards the manufacturing of low tension primary cable for automotive vehicle use.
The requirements of the automotive industry, world-wide, for materials to be used in the short term (year 2000), are based on the following aspects:
Trends in the automotive market at world level.
Alternatives to fulfill the requirements of the automotive industry.
Present and future norms and specifications of the automotive industry.
Commercially available materials that, according to their properties, can fulfill the automotive cable requirements.
The trends in the automotive industry have been focused towards weight reduction in order to reach a lower demand for fuel. On the other hand, the demand for vehicles that offer better safety, luxury and comfort, and the consequent need for cables for the various additional circuits, has increased rapidly and will continue to increase in the coming years.
Conductor diameter reduction, while maintaining the same mechanical characteristics as the conductors presently used in the automotive harnessed, is the alternative chosen by the designers and it will continue to be the main trend during the coming years. This makes it necessary to resort to the conductor materials more mechanically resistant than copper, keeping an adequate balance between mechanical resistance and electrical conductivity in order to meet the specifications.
Presently there are two specification proposals with regard to an automotive cable that covers the previously described characteristics, said two proposals are as follows:
Norm SAE J-1678 “Low Tension, Ultra Thin Wall Primary Cable”
FORD Engineering Specification—“Cable, Primary Low Tension 0.25 mm and 0.15 mm Wall”
Said specifications do not describe the material with which conductors have to be manufactured, but establish a minimum breaking load as well as a maximum electrical resistance; in this case, the present invention encompasses the 24 and 26 AWG conductors, which present as design condition, seven-wire strand symmetrical formation.
Presently the conductors used for gauges below 22 AWG are manufactured from 100% copper alloys, which must have a mechanical and electrical resistance that meets the above specification.
SUMMARY OF THE INVENTION
It is thus an object of the present invention to produce:
Hybrid conductors with a seven-wire strand symmetrical construction, i.e., use a high strength wire in the center and 6 hard ETP copper wires in the periphery. With regard to 24 AWG gauge conductor, the 7 wires are 32 AWG gauge; with regard to the 26 AWG gauge conductor, the center wire is 33 AWG gauge, while the 6 peripheral wires are 34 AWG gauge.
REFERENCES:
patent: 251114 (1881-12-01), Hallidie
patent: 1629168 (1927-05-01), Massingham
patent: 3083817 (1963-04-01), Campbell
patent: 3131469 (1964-05-01), Glaze
patent: 3795760 (1974-03-01), Raw et al.
patent: 3819399 (1974-06-01), Campbell et al.
patent: 3831370 (1974-08-01), Gilmore
patent: 4623218 (1986-11-01), Laurette et al.
patent: 4651513 (1987-03-01), Dambre
patent: 5133121 (1992-07-01), Birbeck et al.
patent: 5170015 (1992-12-01), Kudo et al.
patent: 5679232 (1997-10-01), Fedor et al.
Malo Juan De Dios Concha
Mello Mario Sanchez
Valadez Armando Rodriguez
Vazquez Belisario Sanchez
Curtis Carmen Pili
Kincaid Kristine
Mayo, III William H
Servicious Condumex S.A. de C.V.
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