Patents by Inventor Heman Gaessler

Heman Gaessler 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).

  • Publication number: 20060137633
    Abstract: An arrangement for supplying current to the solenoid valves of an electrohydraulic valve-timing system of an internal combustion engine in a controllable manner has solenoid valves assigned to the gas-exchange actuators. A two-stage supplying of voltage is provided for the solenoid valves, namely the supplying of an inrush voltage from an inrush voltage source, and the supplying of a holding voltage from a holding voltage source. In this context, the inrush voltage is greater than the holding voltage. The solenoid valves can be actuated independently of one another for the duration of an inrush current time by an inrush current that corresponds to the applied inrush voltage, and for the duration of a holding current time by a holding current that corresponds to the applied holding voltage. For each solenoid valve, one holding voltage line and one inrush voltage line are provided, which connect the solenoid valve to the holding voltage source and to the inrush voltage source, respectively.
    Type: Application
    Filed: May 27, 2003
    Publication date: June 29, 2006
    Inventors: Hubert Schweiggart, Ulf Pischke, Heman Gaessler