Patents by Inventor James R. Holmstrom

James R. Holmstrom 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).

  • Method and apparatus for energizing metallic strip for plating
    Patent number: 4662997
    Abstract: A novel contact roll assembly particularly suited for use in electro-chemical plating of metallic strip. A contact roll is rotatably mounted on a stationary support which is attached to a bus bar. Regions of contact between the stationary support and the contact roll are preferably by metallic inserts carried by the support. The inserts not only provide support for the contact roll but also provide bearing surfaces for journalling the roll and provide large surface contact areas for flow of plating current.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: May 5, 1987
    Inventors: Theodore A. Hirt, James R. Holmstrom
  • Tension bridle
    Patent number: 4215806
    Abstract: The disclosure relates to a multi-roll tension bridle for hot and cold rolled steel strip, in which at least the first roll of the bridle is provided with an internally mounted normally non-rotating electromagnet for causing the strip to be attracted against the entry portion of the roll in order to create a pretensioning in the portion of the strip immediately adjacent the entry side of the bridle, thereby causing the bridle drive motor to load up preventing slippage of strip on the roll.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: August 5, 1980
    Assignee: Wean United, Inc.
    Inventor: James R. Holmstrom