Brushless electroforming apparatus

US5472587A · kind A · utility

Assignee

• Xerox Corporation · US

Inventors

• Patricia Bischoping · Webster, US
• Robert P. Altavela · Webster, US
• Lawrence Kotowicz · Rochester, US
• Peter Schmitt · Erlangen, DE
• William G. Herbert · Ellisville, US
• Ronald E. Jansen · Stuart, US
• John H. Lennon · Canandaigua, US
• Henry G. Grey · Las Vegas, US

Key dates

• Filing date: Feb 25, 1994
• Grant date: Dec 5, 1995
• Expiry date: Feb 25, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C25D1/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An apparatus is disclosed for depositing metal on a mandrel which provides a brushless electrical current continuity between the mandrel and a current source, comprising: (a) a metal deposition vessel; (b) an electrode disposed in the vessel; (c) a mandrel disposed in the vessel, spaced apart from the electrode; (d) an electrically conductive liquid disposed in the vessel; (e) an electrolytic solution disposed in the tank; (f) a layer of a substantially electrically nonconductive material disposed between the electrolytic solution and the conductive liquid; and (g) connecting means for electrically connecting the mandrel and the conductive liquid, coupled to the mandrel.