Graftech International Holdings Inc.

Ucar Carbon Company Inc.

Ucar Carbon Technology Corporation

National Coupling Company, Inc.

Robert E Smith

Philip Dennis Coleman

Lionel D Burton Batty

Michael Frastaci

Francis E Wise

Jerry L Bjornestad

Olin W Hotchkiss

Horace C Moncrief

A pin for use in connecting graphite electrodes into a joint, where the pin has at least one male tang having a tang factor, defined as the ratio of male tang length to diameter of the electrode into which hit is to be threaded, of at least about 0.60.

Optimized graphite electrode pin configuration

A joint for connecting two carbon members, with at least one carbon member having an asymmetrical coefficient of thermal expansion. The carbon member having the asymmetrical coefficient of thermal expansion also has either a male tang or a female socket with an elliptical cross section selectively oriented to the asymmetrical coefficient of thermal expansion.

Enhanced joints for pins and electrodes with asymmetric properties

A graphite electrode joint, where the male tang has a tang factor, defined as the ratio of male tang length to electrode diameter, of at least about 0.60.

Male-female electrode joint

Electrode joint for threadably joining two abutting carbon electrode sections is provided with an elongate carbon fastening element which is force fitted into a passage extending from outside of the electrode joint through a portion of the interface contact between the abutting carbon electrode sections.

Fastening element for securing electrode joints and the electrode using

Growing community of inventors

Strongsville, OH, United States of America

Robert E Smith