Patents by Inventor Danilo C. Martinez

Danilo C. Martinez has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electric arc welder that provides non-sticking arc initiation and thereafter maintains the arc
    Patent number: 4523077
    Abstract: An electric arc welder has a current-conducting means which can supply welding power to an arc along a first volt-ampere curve, has a second current-conducting means which can be paralleled with the first current-conducting means to supply welding power to that arc along a second and distinctly-different volt-ampere curve, has a voltage-sensing circuit which senses the arc voltage, and has a control circuit which automatically and virtually-instantaneously shifts the supplying of welding power from a point on the first volt-ampere curve to a point of essentially-equal potential on the second and distinctly-different volt-ampere curve when the voltage-sensing circuit senses that the arc voltage has fallen below a predetermined value.
    Type: Grant
    Filed: June 16, 1983
    Date of Patent: June 11, 1985
    Assignee: Big Four Manufacturing Company, Inc.
    Inventors: Harold C. Hoyt, Jr., Danilo C. Martinez, Stanley M. Philipak