Arc discharge suppressive terminal pair

Details Arc discharge suppressive terminal pair Arc discharge suppressive terminal pair

2005-03-01

2005-03-01

Ta, Tho D. (Department: 2833)

Electrical connectors

Including arc suppressing or extinguishing means

C439S886000

Reexamination Certificate

active

06860746

ABSTRACT:
Provided is a pair of arc discharge suppressive terminals electrically communicable with each other by engagement of the terminal pair. At least one of the terminal pair has a final contact site which is in contact with the counterpart terminal at a final stage of disengagement of the terminal pair. At least the final contact site is covered with an arc discharge suppressive layer containing a first metal having a melting point of 1,550° C. or higher. It is preferable that the terminal pair contact with each other at a portion corresponding to a main contact site other than the arc discharge suppressive layer in a completely engaged state where the one of the terminal pair and the counterpart terminal are tightly engaged with each other. Preferably, the main contact site has a surface made of a material having a higher conductivity than the arc discharge suppressive layer. This arrangement effectively suppresses occurrence of arc discharge at a time of disengagement of the terminal pair.

REFERENCES:
patent: 4747783 (1988-05-01), Bellamy et al.
patent: 4752334 (1988-06-01), Nadkarni et al.
patent: 4999336 (1991-03-01), Nadkarni et al.
patent: 5139891 (1992-08-01), Cowie et al.
patent: 5208978 (1993-05-01), Dixon et al.
patent: 5236789 (1993-08-01), Cowie et al.
patent: 20010024895 (2001-09-01), Sakiyama et al.
patent: 20020064986 (2002-05-01), Hirai et al.

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