An electric arc welder for performing welding on a work object, the electric arc welder comprsing a welding tip, a first connector for electrically connecting the welding tip to a first terminal of a battery, and a second connector for electrically connecting the work object to a second terminal of the...http://www.google.com.au/patents/US5086208?utm_source=gb-gplus-sharePatent US5086208 - Hand held electric arc welder
