Patents by Inventor Heikki T. Koivikko

Heikki T. Koivikko 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 motor including reduction-gear and circuit
    Patent number: 5027023
    Abstract: The reduction gear (6) is fastened to the body (1) of an electric motor including a gear, and the motor stator is fastened to the removable electronics part (13) of the body. The motor rotor (7) is connected to the gear with an input shaft (15), the output shaft (20) extending concentrically through the input shaft. The output shaft (20) is carried in bearings (3, 4) essentially near the end faces of the housing (1, 13). One end of the output shaft constitutes a flange-shaped cover (2) of the gear, the flange being carried in a bearing (3) close to the outer periphery of the housing. The gear can be realized as a friction gear with several stages.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: June 25, 1991
    Inventor: Heikki T. Koivikko