Patents by Inventor Kalevi Herold

Kalevi Herold 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).

  • Mechanical interlocking device for electrical apparatuses, and use thereof in a motor start assembly
    Patent number: 6411185
    Abstract: Device for interlocking of electric apparatuses, comprising a blocking element (8) that is operated by the associated electric apparatuses via separate, moving plungers (3, 4) to be pivoted similar to a cradle into alternative positions wherein the blocking element is effective for preventing an unintentional and simultaneous circuit closing motion in both apparatuses, and for securing at all times that only one of the apparatuses may be operative.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: June 25, 2002
    Assignee: ABB AB
    Inventor: Kalevi Herold