Patents by Inventor Harmut Witte

Harmut Witte 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 of controlling a switching flap, and a switching-flap actuating unit
    Patent number: 7177757
    Abstract: In a method for controlling a switching flap (10) arranged in an intake pipe connected with an internal-combustion engine the switching flap (10) is rotated with the aid of a switching-flap shaft (12) connected with an electromotor (18). With the aid of a position-detecting device (22,26;24,26) an end position of the switching flap (10) is detected. Subsequently, a rotation force is continued to be applied to the shaft (12) to hold the switching flap (10) in the end position. For detecting a breakage of the switching-flap shaft (12), an error message is generated when the switching-flap shaft (12) continues to rotate beyond the end position.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: February 13, 2007
    Assignee: Pierburgh GmbH
    Inventors: Norbert Ludwig, Frank Buerger, Harmut Witte
  • Method of controlling a switching flap, and a switching-flap actuating unit
    Publication number: 20050263130
    Abstract: In a method for controlling a switching flap (10) arranged in an intake pipe connected with an internal-combustion engine the switching flap (10) is rotated with the aid of a switching-flap shaft (12) connected with an electromotor (18). With the aid of a position-detecting means (22,26; 24,26) an end position of the switching flap (10) is detected. Subsequently, a rotation force is continued to be applied to the shaft (12) to hold the switching flap (10) in the end position. For detecting a breakage of the switching-flap shaft (12), an error message is generated when the switching-flap shaft (12) continues to rotate beyond the end position.
    Type: Application
    Filed: May 5, 2005
    Publication date: December 1, 2005
    Applicant: Pierburg GmbH
    Inventors: Norbert Ludwig, Frank Buerger, Harmut Witte