Norman R Hozer

47102799, Dec 1, 1987

Mar 2, 1987

7/020510

Norman R. Hozer - Thousand Oaks CA

C25F 300

20412955

A method and bath for electro-chemically resharpening of a metallic cutting tool wherein the bath is composed of an aqueous solution of phosphoric acid and sulphuric acid to which is added the stabilizers of chromic acid, nickel carbonate and ferric oxide. An electrical potential is applied to the cutting tool within the bath within the range of one-half volt to six volts for a period of between one and twenty minutes depending upon the type of part (size and construction) that is being resharpened. Preferred temperature of usage for the bath will be approximately seventy-five degrees Fahrenheit.

52136671, May 25, 1993

Aug 5, 1991

7/740330

Norman R. Hozer - Louisville KY

C25F 300

20412955

In accordance with one embodiment, a method for increasing the useful working life of a tool comprises providing a bath capable of removing a surface region of an unused tool containing material near the surface under mechanical stress, immersing the tool in the bath and applying an electric potential for a time period sufficient to remove the region.