Patents by Inventor Lukas STUMM

Lukas STUMM 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: 11813666
    Abstract: A casting core for casting moulds can include a central core and a core shroud arranged around the central core. The core shroud containing contains or consists of ceramic particles bound to a binder. The central core contains ceramic particles bound to a binder, wherein the ceramic particles of the central core contain at least one component, which exhibits, at a temperature in a range from 100° C. to 1500° C., a thermally induced phase transformation, and/ or at least two components, the thermal expansion coefficients of which at 20° C. differ by at least 5·10?6K?1.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: November 14, 2023
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
    Inventors: Franz-Josef Wöstmann, Lukas Stumm, Christian Soltmann, Matthias Busse
  • Patent number: 11794236
    Abstract: The present invention relates to a casting core for casting molds, wherein the casting core contains or consists of ceramic particles bound with a silica sol. The casting core has a pore structure, in which the average pore size of the pores increases at least in sections from the outside to the inside in the casting core. The present invention also relates to a method for producing the casting core according to the invention and to the use of the casting core according to the invention.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 24, 2023
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Matthias Busse, Christian Soltmann, Lukas Stumm, Franz-Josef Wöstmann
  • Patent number: 11612930
    Abstract: Disclosed herein are systems and methods for production and use of a casting mold for casting components. The casting mold comprises at least one casting mold frame made of metal and/or of an alloy, and also one or more ceramic casting mold inserts introduced into the at least one casting mold frame. The casting mold insert(s) have the negative contour or part of the negative contour of a component to be produced or of the combination of a component to be produced with one or more casting cores.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: March 28, 2023
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Franz-Josef Wöstmann, Lukas Stumm, Christian Soltmann, Matthias Busse
  • Patent number: 11590564
    Abstract: Disclosed herein is a casting core for casting molds, the casting core comprising an inner core and an outer core arranged around the inner core. The outer core contains or consists of ceramic particles bound with a binder. The inner core contains ceramic particles bound with a binder and additionally one or more placeholder elements. The placeholder element(s) is/are at least partially thermally decomposable. Also disclosed is a method for producing the casting core and use of the casting core.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: February 28, 2023
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
    Inventors: Franz-Josef Wöstmann, Lukas Stumm, Christian Soltmann, Matthias Busse
  • Publication number: 20220048100
    Abstract: The invention relates to a casting core for casting moulds, wherein the casting core comprises a central core and a core shroud arranged around the central core. The core shroud contains or consists of ceramic particles bound to a binder. The central core contains or consists of ceramic particles bound to a binder, wherein the ceramic particles of the central core contain or consist of at least one component, which exhibits, at a temperature in a range from 100° C. to 1500° C., a thermally induced phase transformation, and/or at least two components, the thermal expansion coefficients of which at 20° C. differ by at least 5·10?6 K?1. The invention further relates to a method for producing the casting core according to the invention and the use of the casting core according to the invention.
    Type: Application
    Filed: September 19, 2019
    Publication date: February 17, 2022
    Inventors: Franz-Josef WÖSTMANN, Lukas STUMM, Christian SOLTMANN, Matthias BUSSE
  • Publication number: 20210346943
    Abstract: The present invention relates to a casting core for casting molds, wherein the casting core contains or consists of ceramic particles bound with a silica sol. The casting core has a pore structure, in which the average pore size of the pores increases at least in sections from the outside to the inside in the casting core. The present invention also relates to a method for producing the casting core according to the invention and to the use of the casting core according to the invention.
    Type: Application
    Filed: September 19, 2019
    Publication date: November 11, 2021
    Inventors: Matthias Busse, Christian Soltmann, Lukas Stumm, Franz-Josef Wöstmann
  • Publication number: 20210351675
    Abstract: The invention relates to a method for producing a coil (6), in which, by means of casting, a semi-finished product (5) in the form of an elongate conductor is formed in a cavity (2) of a casting tool and the coil (6) is formed following a demolding of the semi-finished product (5) by shaping this semi-finished product (5), wherein the form of the semi-finished product (5) may be derived from a shape of the finished coil (6) by stretching along a longitudinal axis of the coil (6) and/or by bending this longitudinal axis, and wherein the semi-finished product (5), during the shaping, is bent and compressed so that windings of the coil (5) already present in the semi-finished product (5) are brought closer to one another at least in some regions during the shaping and are brought into an arrangement along the longitudinal axis of the finished coil (6), wherein the conductor, whilst being shaped, is twisted or bent by no more than a right angle over the course of each individual turn.
    Type: Application
    Filed: September 19, 2019
    Publication date: November 11, 2021
    Inventors: Franz-Josef Wöstmann, Michael Heuser, Matthias Busse, Lukas Stumm
  • Publication number: 20210268571
    Abstract: The present invention relates to a casting mold for casting components. The casting mold comprises at least one casting mold frame made of metal and/or of an alloy, and also one or more ceramic casting mold inserts introduced into the at least one casting mold frame. The casting mold insert or the casting mold inserts has/have the negative contour or part of the negative contour of a component to be produced or of the combination of a component to be produced with one or more casting cores. The present invention also relates to a method for producing the casting mold according to the invention and to the use of the casting mold according to the invention.
    Type: Application
    Filed: September 19, 2019
    Publication date: September 2, 2021
    Inventors: Franz-Josef WÖSTMANN, Lukas STUMM, Christian SOLTMANN, Matthias BUSSE
  • Publication number: 20210213514
    Abstract: The present invention relates to a casting core for casting moulds, the casting core comprising an inner core and an outer core arranged around the inner core. The outer core contains or consists of ceramic particles bound with a binder. The inner core contains ceramic particles bound with a binder and additionally one or more placeholder elements. The placeholder element(s) is/are at least partially thermally decomposable. The present invention also relates to a method for producing the casting core according to the invention and to the use of the casting core according to the invention.
    Type: Application
    Filed: September 19, 2019
    Publication date: July 15, 2021
    Inventors: Franz-Josef WÖSTMANN, Lukas STUMM, Christian SOLTMANN, Matthias BUSSE