Device for producing electrical discharges in an aqueous medium

US6972116B2 · kind B2 · utility

Assignee

• HMT LLC · US

Inventors

• Norbert Brill · Gerlikon, CH
• Rudiger Bolze · Reichenau, DE
• Stefan Regenscheit · Kreuzlingen, CH
• Frank Schock · Konstanz, DE
• Erwin Simnacher · Konstanz, DE
• Karl-Heinz Restle · Tettnang, DE

Key dates

• Filing date: Mar 15, 2002
• Grant date: Dec 6, 2005
• Expiry date: Apr 26, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/40
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A device for producing electrical discharges in an aqueous medium which comprises a first electrode and a second electrode comprised of a superalloy having a cobalt content of greater than 8% by weight or optionally a nickel content of greater than 8% by weight. A high electrical voltage is applied to the electrodes to produce a voltage discharge into the medium that creates a pressure wave in the medium. The electrodes of the device exhibit high thermal shock resistance during discharge thereby reducing tip burnout.