Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2005-05-31
2005-05-31
Nguyen, Vinh P. (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S754090
Reexamination Certificate
active
06900651
ABSTRACT:
A low electric resistance is accomplished because there are no parts connecting different components as opposed to the arrangement using an electroconductive needle member and an electroconductive coil spring, and a low electric inductance can be accomplished because the coil spring is closely wound and surface processed with highly electroconductive material, thereby providing a straight electric path along the axial direction of the closely wound portion of the coil spring. Because the coil spring portion has a uniform pitch, and the contact unit consists of closely wound portions and the uniform pitch portion, it can be formed with a simple coiling process, and the manufacturing cost can be minimized.
REFERENCES:
patent: 4773877 (1988-09-01), Kruger et al.
patent: 5414369 (1995-05-01), Kazama
patent: 6043666 (2000-03-01), Kazama
patent: 63-7357 (1988-01-01), None
patent: 63-293845 (1988-11-01), None
patent: 07161416 (1995-06-01), None
patent: 9-121007 (1997-05-01), None
patent: 10-19926 (1998-01-01), None
patent: WO97/39361 (1997-10-01), None
MacPherson Kwok & Chen & Heid LLP
Nguyen Vinh P.
NHK Spring Co. Ltd.
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