Patents by Inventor Leif Englund

Leif Englund 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).

  • Stand structure for supporting electric high voltage equipment
    Patent number: 4577826
    Abstract: A platform for carrying electric high-voltage equipment, such as series-capacitors etc., is supported by insulator columns which are articulated at the upper and lower ends. Bracing takes place with the aid of diagonally-braced insulators which are connected together by means of ropes via a prestressed spring damper. The means provides a high damping and a low natural frequency in case of earthquake stresses. Through the prestressing of the spring damper, the platform will remain stationary at low loads such as wind loads.
    Type: Grant
    Filed: July 9, 1984
    Date of Patent: March 25, 1986
    Assignee: ASEA Aktiebolag
    Inventors: Tommy Bergstrom, Goran Boman, Leif Englund