Patents by Inventor Walter FEST

Walter FEST 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 device and method for regulating a hydraulic device
    Patent number: 12623389
    Abstract: The invention relates to a hydraulic device for supplying a plurality of work units (3a, 3b), in particular on a plastics injection moulding machine, said device comprising at least one controller (7), at least one valve regulator and/or one valve controller and a central drive (1). A regulating valve (13a, 13b) with a regulating-valve geometry is provided on at least one of the work units (3a, 3b). Pressure sensors (8) detect at least one pressure both upstream and downstream of the regulating valve (13a, 13b), the load pressure (10a, 10b) of at least one of the work units (3a, 3b), and the system pressure (9).
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: May 12, 2026
    Assignee: ARBURG GMBH + CO KG
    Inventors: Eberhard Duffner, Walter Fest
  • HYDRAULIC DEVICE AND METHOD FOR REGULATING A HYDRAULIC DEVICE
    Publication number: 20240227269
    Abstract: The invention relates to a hydraulic device for supplying a plurality of work units (3a, 3b), in particular on a plastics injection moulding machine, said device comprising at least one controller (7), at least one valve regulator and/or one valve controller and a central drive (1). A regulating valve (13a, 13b) with a regulating-valve geometry is provided on at least one of the work units (3a, 3b). Pressure sensors (8) detect at least one pressure both upstream and downstream of the regulating valve (13a, 13b), the load pressure (10a, 10b) of at least one of the work units (3a, 3b), and the system pressure (9).
    Type: Application
    Filed: February 21, 2022
    Publication date: July 11, 2024
    Inventors: Eberhard DUFFNER, Walter FEST
  • HYDRAULIC DEVICE AND METHOD FOR REGULATING A HYDRAULIC DEVICE
    Publication number: 20240131767
    Abstract: The invention relates to a hydraulic device for supplying a plurality of work units (3a, 3b), in particular on a plastics injection moulding machine, said device comprising at least one controller (7), at least one valve regulator and/or one valve controller and a central drive (1). A regulating valve (13a, 13b) with a regulating-valve geometry is provided on at least one of the work units (3a, 3b). Pressure sensors (8) detect at least one pressure both upstream and downstream of the regulating valve (13a, 13b), the load pressure (10a, 10b) of at least one of the work units (3a, 3b), and the system pressure (9).
    Type: Application
    Filed: February 21, 2022
    Publication date: April 25, 2024
    Inventors: Eberhard DUFFNER, Walter FEST