Patents by Inventor Achim Haesters

Achim Haesters 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).

  • Motor control system for the PWM control of an electric motor
    Patent number: 7589490
    Abstract: The subject of the present invention is a motor control system having a monitoring circuit for monitoring PWM control for a DC electric motor, the PWM control comprising a power end stage having at least one field effect transistor, which controls the current at the DC electric motor. The motor control system is designed to monitor the current at the DC electric motor. The motor control system detects the voltage drop across the field effect transistor and comprises a temperature sensor for detecting the temperature of the field effect transistor. Furthermore, the motor control system is designed to determine the resistance of the field effect transistor from the detected temperature thereof, and to determine the current at the DC electric motor from the resistance of the field effect transistor and from the voltage drop across the field effect transistor.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: September 15, 2009
    Assignee: Ford Motor Company
    Inventors: Achim Haesters, Bernd Dienhart, Joachim Waschkies, Guido Lindeke, Cornelius Peter, Angelika Peter, legal representative
  • Motor control system for the PWM control of an electric motor
    Publication number: 20080008459
    Abstract: The subject of the present invention is a motor control system having a monitoring circuit for monitoring PWM control for a DC electric motor, the PWM control comprising a power end stage having at least one field effect transistor, which controls the current at the DC electric motor. The motor control system is designed to monitor the current at the DC electric motor. The motor control system detects the voltage drop across the field effect transistor and comprises a temperature sensor for detecting the temperature of the field effect transistor. Furthermore, the motor control system is designed to determine the resistance of the field effect transistor from the detected temperature thereof, and to determine the current at the DC electric motor from the resistance of the field effect transistor and from the voltage drop across the field effect transistor.
    Type: Application
    Filed: June 19, 2007
    Publication date: January 10, 2008
    Inventors: Achim Haesters, Bernd Dienhart, Joachim Waschkies, Guido Lindeke, Cornelius Peter, Angelika Peter
  • Hollow beam with component mounting arrangements
    Patent number: 5259660
    Abstract: A hollow beam 2 includes provisions (12, 13, 14 and 15) to allow mounting a spacer sleeve or support body 6 in its intended location for insertion of a mounting bolt 5 from outside the beam 2. The sleeve (6) at least partially encompasses the mounting bolt 5 and is inserted through an access opening (11) into the hollow beam 2 and is subsequently positioned in registration with attachment holes and which recive the mounting bolt 5.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: November 9, 1993
    Assignee: Ford Motor Company
    Inventor: Achim Haesters