Patents by Inventor Winfried F.-X. Schulz

Winfried F.-X. Schulz 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).

  • Multiple ratio automatic transmission with solenoid operated valves for effecting pressure buildup
    Patent number: 5612874
    Abstract: A control system for a multiple ratio transmission including a hydrokinetic torque converter with a pressure actuated friction bypass clutch, pressure actuated clutches and brakes controlling ratio changes in forward drive and for effecting reverse drive, a solenoid operated pressure control that develops an optimum clutch and brake pressure for smooth engagement and for increased torque capacity during start-up, and separate solenoid regulator valves for ratio shift valve control and for bypass clutch pressure control.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: March 18, 1997
    Assignee: Ford Motor Company
    Inventors: Winfried F.-X. Schulz, Johann Kirchhoffer
  • Shift control system for a multiple ratio automatic transmission with manual ratio ranges
    Patent number: 5586029
    Abstract: A multiple ratio transmission for an automotive vehicle comprising a main gear unit with at least three ratios and an overdrive gear unit with a direct drive ratio and an overdrive ratio, and a control valve system that will permit upshifting and downshifting of the overdrive gear unit while inhibiting ratio changes in said main gear unit from either a second ratio manual drive mode or from a third ratio manual drive mode.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: December 17, 1996
    Assignee: Ford Motor Company
    Inventors: Winfried F.-X. Schulz, Johann Kirchhoffer