Patents by Inventor Siegfried Oehler

Siegfried Oehler 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 for detecting step losses in stepping-motor-driven adjusting devices
    Patent number: 4683410
    Abstract: In the method for detecting step losses in stepping-motor-driven actuating devices, a reference position of the actuating device is used for generating a sequence of drive pulses for the stepping motor. Simultaneously, the motor rotation is used for generating a pulse sequence which is compared at the rate of the drive pulses with a pattern, specific to the type of construction, of the stepping motor.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: July 28, 1987
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rudolf Kressirer, Siegfried Oehler