Patents by Inventor Matthias Liermann

Matthias Liermann 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: 9114787
    Abstract: A pressure generating device generates a hydraulic pressure as a result of a tensile or compressive load. The device has connections, one of which can be rigidly connected to a frame by way of a mechanism for introducing a mechanical tensile or compressive load, a pressure cylinder and a piston unit extending at least partially and flexibly in the pressure cylinder and bounding a hydraulic chamber filled with hydraulic fluid jointly with the pressure cylinder. The chamber has a simple and inexpensive construction. The connections are connected to the pressure cylinder or the piston unit by way of a coupling device that is configured such that the same hydraulic chamber has pressure applied thereto under tensile load and under compressive load.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: August 25, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Julian Ewald, Matthias Liermann, Christian Stammen
  • Patent number: 8915553
    Abstract: A braking device for braking a moving mass includes a movably guided coupling member for pressing a brake lining against a braking surface, a brake cylinder, filled with a hydraulic liquid, a brake piston which is movable inside the brake cylinder and which is connected to the coupling member. At least one hydraulic line can be connected to the brake cylinder. The device ensures the moving masses to be reliably decelerated. For that purpose, a fluidic-mechanical safety brake device is used to connect the brake cylinder to the one or more hydraulic lines.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: December 23, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Liermann, Toni Schiffers, Christian Stammen
  • Patent number: 8857472
    Abstract: A compact and light-weight hydraulic accumulator configuration for a hydraulic brake includes a high-pressure storage chamber, a medium-pressure storage chamber and an atmospheric-pressure storage chamber. The high-pressure storage chamber, the medium-pressure storage chamber and the atmospheric-pressure storage chamber are disposed in a common housing which delimits the high-pressure storage chamber along with a high-pressure piston movably guided within the housing while delimiting the medium-pressure storage chamber along with a medium-pressure piston movably guided within the housing. A high-pressure spring located in the housing rests on the high-pressure piston outside the high-pressure storage chamber and a medium-pressure spring located in the housing rests on the medium-pressure piston outside the medium-pressure storage chamber.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: October 14, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Matthias Liermann, Christian Stammen
  • Publication number: 20120217104
    Abstract: An economical, light and reliable hydraulic braking system for braking a moving mass includes a pressure element or press part for pressing onto a brake surface under frictional contact, a brake actuator filled with hydraulic fluid for producing pressure in the pressure element and a spacing device for adjusting play between the pressure element and the brake surface when the brake system is in a released or non-active position. The spacing device includes a hydraulic accumulator for accumulating a predefined volume of hydraulic fluid at a minimum pressure. The hydraulic accumulator can be connected to the brake actuator, thus avoiding the use of mechanical stopping or blocking devices.
    Type: Application
    Filed: August 24, 2010
    Publication date: August 30, 2012
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Matthias Liermann, Christian Stammen
  • Publication number: 20120216900
    Abstract: A compact and light-weight hydraulic accumulator configuration for a hydraulic brake includes a high-pressure storage chamber, a medium-pressure storage chamber and an atmospheric-pressure storage chamber. The high-pressure storage chamber, the medium-pressure storage chamber and the atmospheric-pressure storage chamber are disposed in a common housing which delimits the high-pressure storage chamber along with a high-pressure piston movably guided within the housing while delimiting the medium-pressure storage chamber along with a medium-pressure piston movably guided within the housing. A high-pressure spring located in the housing rests on the high-pressure piston outside the high-pressure storage chamber and a medium-pressure spring located in the housing rests on the medium-pressure piston outside the medium-pressure storage chamber.
    Type: Application
    Filed: August 24, 2010
    Publication date: August 30, 2012
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Matthias Liermann, Christian Stammen
  • Publication number: 20120124990
    Abstract: A pressure generating device generates a hydraulic pressure as a result of a tensile or compressive load. The device has connections, one of which can be rigidly connected to a frame by way of a mechanism for introducing a mechanical tensile or compressive load, a pressure cylinder and a piston unit extending at least partially and flexibly in the pressure cylinder and bounding a hydraulic chamber filled with hydraulic fluid jointly with the pressure cylinder. The chamber has a simple and inexpensive construction. The connections are connected to the pressure cylinder or the piston unit by way of a coupling device that is configured such that the same hydraulic chamber has pressure applied thereto under tensile load and under compressive load.
    Type: Application
    Filed: July 7, 2010
    Publication date: May 24, 2012
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Julian Ewald, Matthias Liermann, Christian Stammen
  • Publication number: 20100001578
    Abstract: A braking device for braking a moving mass includes a movably guided coupling member for pressing a brake lining against a braking surface, a brake cylinder, filled with a hydraulic liquid, a brake piston which is movable inside the brake cylinder and which is connected to the coupling member. At least one hydraulic line can be connected to the brake cylinder. The device ensures the moving masses to be reliably decelerated. For that purpose, a fluidic-mechanical safety brake device is used to connect the brake cylinder to the one or more hydraulic lines.
    Type: Application
    Filed: August 23, 2007
    Publication date: January 7, 2010
    Applicant: SIEMENS AKTIEGESELLSCHAFT
    Inventors: Matthias Liermann, Toni Schiffers, Christian Stammen