Electrical conductive contact ring for electroplating or electrodeposition

a contact ring and electrodeposition technology, applied in the field of electroplating or electrodeposition, can solve the problems of inconsistent metal coating on the surface, difficulty in creating a continuous electrical contact with moving endless tubes, and known methods of brush-to-tube conductive contact tend to be somewhat intermittent, so as to achieve a long life and minimal service
US20070278093A1Inactive Publication Date: 2007-12-06ILLINOIS TOOL WORKS INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
ILLINOIS TOOL WORKS INC
Publication Date
2007-12-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A conductive contact ring for an electroplating or electrodeposition process on a cylindrical surface includes a frame defining an opening through which the object can be passed and an array of electrically conductive fibers spanning the opening. The frame is electrically conductive and is connected to a DC power source in the process. Two or more contact rings can be used in a process to provide consistent electrical contact with the surface sliding therethrough. A single contact ring can have first and second groups of filaments spaced from each other along the axial length of the surface.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates generally to electro-coating processes, such as electroplating and electrodeposition processes, and, more particularly, the invention pertains to such processes for tubing and even more particularly to the electrical contact formed with the tubing in an electrodeposition or electroplating process.BACKGROUND OF THE INVENTION

[0002] Electroplating and electrodeposition have been used to provide surface layers on parts of many types, including tubing used in manufacturing coaxial cables to shield the conductor in the cable from ambient signals that would adversely affect the performance of the cable. In a known tubular coating process a continuous tube is pulled through a bath solution with conductive metal ions therein, such as, for example, silver, gold, copper, nickel and others. A cathode (negative pole) connection of a DC power supply is made with the endless tube. An anode of the metal used in the coating process is connecte...

Claims

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