Patents by Inventor Ralf Steinfeldt

Ralf Steinfeldt 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).

  • Patent number: 8534435
    Abstract: An actuating device for applying actuating forces in a friction clutch device for engaging and disengaging a friction clutch assembly of the friction clutch device. The torque transmission device comprises the actuating device for transmission of torque between a drive unit and a transmission which also includes the friction clutch device. A method for installing a torque transmission device of this type. Various aspects relate to setting of a pre-load on a bearing of the actuating device, setting an over-dead-point configuration for a compensation spring associated with at least one rotary member of the actuating device, setting a rotation movement range for the rotary member and/or an axial movement range for an actuating element which can be displaced axially by rotation movement imparted to the rotary member, and producing either a normally engaged or disengaged characteristic in a normally-engaged or normally-disengaged friction clutch assembly with the compensation spring.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: September 17, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Peter Fenn, Andreas Ratte, Klaus Reuter, Ralf Steinfeldt, Matthias Reisch, Juergen Wafzig
  • Publication number: 20130118637
    Abstract: A method and the device used to fill a container with a product. The product includes a first liquid component and at least a second component. The product is fed to the container to be filled via at least one filling pipe and at least one filling valve. The filling pipe is divided between the receptacle and the filling valve into pipe sections by at least one throttle valve. The pipe section between the filling valve and a throttle valve arranged adjacent to the filling valve is dimensioned so that the internal volume of this part of the filling pipe essentially corresponds to a filling volume of a container to be filled.
    Type: Application
    Filed: May 5, 2011
    Publication date: May 16, 2013
    Applicant: SIG TECHNOLOGY AG
    Inventors: Frank Heep, Ralf Steinfeldt, Johannes Hortmanns
  • Publication number: 20110005886
    Abstract: An actuating device for applying actuating forces in a friction clutch device for engaging and disengaging a friction clutch assembly of the friction clutch device. The torque transmission device comprises the actuating device for transmission of torque between a drive unit and a transmission which also includes the friction clutch device. A method for installing a torque transmission device of this type. Various aspects relate to setting of a pre-load on a bearing of the actuating device, setting an over-dead-point configuration for a compensation spring associated with at least one rotary member of the actuating device, setting a rotation movement range for the rotary member and/or an axial movement range for an actuating element which can be displaced axially by rotation movement imparted to the rotary member, and producing either a normally engaged or disengaged characteristic in a normally-engaged or normally-disengaged friction clutch assembly with the compensation spring.
    Type: Application
    Filed: October 22, 2008
    Publication date: January 13, 2011
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Peter Fenn, Andreas Ratte, Klaus Reuter, Ralf Steinfeldt, Matthias Reisch, Juergen Wafzig