Patents by Inventor Patrick Stephan

Patrick Stephan 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).

  • Hydraulic valve arrangement with control/regulating function
    Patent number: 10273987
    Abstract: The present invention relates to a hydraulic valve arrangement for controlling/regulating at least one hydraulic consumer of a mobile machine, with a summation interconnection of at least two hydraulic valves and at least one consumer interconnection of hydraulic valves, wherein the outputs of the summation interconnection are hydraulically connected with the inputs of the consumer interconnection, wherein at least one backflow valve is provided in the consumer interconnection. According to the invention, the at least one backflow valve for throttling a consumer return volume flow opens or closes in dependence on a consumer inflow pressure and comprises at least one main piston arranged in a bushing and at least two further pistons arranged in a lid separate from the bushing, wherein the main piston and the control piston interact with each other via a compression spring.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: April 30, 2019
    Assignee: Liebherr-Mining Equipment Colmar SAS
    Inventors: Patrick Stephan, Pascal Progin, Michael Deeken, Volker Gliniorz, Phlipp Hahn
  • Hydraulic valve arrangement with control/regulating function
    Patent number: 9829015
    Abstract: The present invention relates to a hydraulic valve arrangement for controlling/regulating at least one hydraulic consumer of a mobile machine, with a summation interconnection of at least two hydraulic valves and at least one consumer interconnection of hydraulic valves, wherein the outputs of the summation interconnection are hydraulically connected with the inputs of the consumer interconnection, wherein at least one backflow valve is provided in the consumer interconnection. According to the invention, the at least one backflow valve for throttling a consumer return volume flow opens or closes in dependence on a consumer inflow pressure and comprises at least one main piston arranged in a bushing and at least two further pistons arranged in a lid separate from the bushing.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: November 28, 2017
    Assignee: Liebherr-Mining Equipment Colmar SAS
    Inventors: Patrick Stephan, Pascal Progin, Michael Deeken, Volker Gliniorz, Phlipp Hahn
  • HYDRAULIC VALVE ARRANGEMENT WITH CONTROL/REGULATING FUNCTION
    Publication number: 20150135698
    Abstract: The present invention relates to a hydraulic valve arrangement for controlling/regulating at least one hydraulic consumer of a mobile machine, with a summation interconnection of at least two hydraulic valves and at least one consumer interconnection of hydraulic valves, wherein the outputs of the summation interconnection are hydraulically connected with the inputs of the consumer interconnection, wherein at least one backflow valve is provided in the consumer interconnection. According to the invention, the at least one backflow valve for throttling a consumer return volume flow opens or closes in dependence on a consumer inflow pressure and comprises at least one main piston arranged in a bushing and at least two further pistons arranged in a lid separate from the bushing, wherein the main piston and the control piston interact with each other via a compression spring.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Patrick Stephan, Pascal Progin, Michael Deeken, Volker Gliniorz, Phlipp Hahn
  • HYDRAULIC VALVE ARRANGEMENT WITH CONTROL/REGULATING FUNCTION
    Publication number: 20150135699
    Abstract: The present invention relates to a hydraulic valve arrangement for controlling/regulating at least one hydraulic consumer of a mobile machine, with a summation interconnection of at least two hydraulic valves and at least one consumer interconnection of hydraulic valves, wherein the outputs of the summation interconnection are hydraulically connected with the inputs of the consumer interconnection, wherein at least one backflow valve is provided in the consumer interconnection. According to the invention, the at least one backflow valve for throttling a consumer return volume flow opens or closes in dependence on a consumer inflow pressure and comprises at least one main piston arranged in a bushing and at least two further pistons arranged in a lid separate from the bushing.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Patrick Stephan, Pascal Progin, Michael Deeken, Volker Gliniorz, Phlipp Hahn