Gould Inc.

Gould Electronics Inc.

Jamie H Chamberlain

Adam G Bay

Shiuh-Kao Chiang

Robert D DeWitt

John P Callahan

Rolland D Savage

David P Burgess

The present invention provides a new and improved titanium metal drum cathode for use in the production of metal foils and a novel method of making the same. The method includes the steps of welding together the ends of a strip of titanium that has been roll formed into a cylinder. During the welding operation some of the weld beads that form the weld are hot peened immediately upon solidification. Upon complete formation of the weld, the formed and welded trip of titanium is subjected to a heat treating cycle that includes a double anneal. Preferably, the strip of titanium metal and the weld metal that is used to form the weld both comprise an addition agent such as yttria.

Drum cathode for use in the production of metal foils and a method of

An anode adapted to be immersed in an electrolytic solution adjacent a moving cathode. The anode is comprised of an electrical conductive grid which is clad with an insoluble metal. The grid has a plurality of anode mounting surfaces formed thereon; the mounting surfaces being formed of an insoluble, conductive metal and being in electrically conductive engagement with the conductive grid. The mounting surfaces are dimensioned to position and support side-by-side a plurality of relatively thin insoluble metal anode plates. The anode plates are shaped to be mounted to the mounting surfaces by the lateral edges thereof wherein current may be applied to the anode plates through the mounted edges. The anode plates are dimensioned such that they form a generally continuous anode surface which conforms to the moving cathode.

Thin plate anode

A conductive copper foil for use in preparing printed circuit boards is protected from damage during storage, shipment and further processing by covering at least one side of the foil with a sheet of plastic film. The film is removably joined with the foil as a result of the essential absence of gaseous material between the film and the foil. Thus, the film conforms intimately to the contours and shape of the foil surface and clings tightly thereto to permit movement and further processing of the foil with the film adhering tightly thereto. The absence of air between the film and the foil is produced by oppositely statically electrically charging the film and the foil such that they are forced together sufficiently to squeeze the air out from therebetween. The film is selected to be sufficiently resistant to laminating temperature and pressure conditions so as to remain in its covering, protecting relationship to the foil and avoid sticking to the laminating press plate and retain its removability from the foil after lamination.

Protected conductive foil assemblage and procedure for preparing same

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Concord, OH, United States of America

Jamie H Chamberlain