Patents by Inventor Rolf Vollmer

Rolf Vollmer 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: 11451121
    Abstract: In a method for producing a material layer with a layer thickness between 0.5 and 500 ?m, a suspension with a binding agent and solid particles is applied through a template onto a base area for obtaining a green body. The binding agent is driven out of the green body and a permanent cohesion of the solid particles is created by heating and/or by compaction.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: September 20, 2022
    Assignee: Siemens Aktiengesellschaft
    Inventors: Reiner Seufert, Rolf Vollmer
  • Publication number: 20220275830
    Abstract: Various teachings herein may be used to make a bearing bush for a rotating shaft, wherein a wall of the bearing bush has a wall thickness which amounts to less than 10% of the diameter of the bearing bush. In the axial direction, the bearing bush is made from a plurality of layers connected with a material bond. Each layer has a layer thickness between 10 ?m and 200 ?m and the wall has closed cavities which are filled with a powder.
    Type: Application
    Filed: February 25, 2022
    Publication date: September 1, 2022
    Applicant: Siemens Aktiengesellschaft
    Inventors: Carsten Schuh, Thomas Soller, Rolf Vollmer
  • Publication number: 20220230799
    Abstract: Various embodiments of the teachings herein include a magnetic sheet stack for an electric machine comprising: a plurality of magnetic sheets electrically insulated from one another by being spaced apart from one another predominantly with a non-vanishing clearance; a respective set of ceramic spacers distributed between each of the plurality of magnetic sheets from an adjacent sheet in the stack; and a respective gas layer filling a gap between a predominant part of a planar extent of each of the plurality of magnetic sheets allowing a cooling fluid to be circulated between the adjacent sheets.
    Type: Application
    Filed: April 16, 2020
    Publication date: July 21, 2022
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jörg Buschbeck, Gotthard Rieger, Carsten Schuh, Thomas Soller, Rolf Vollmer
  • Publication number: 20220200418
    Abstract: Various embodiments include a method for manufacturing a magnetic sheet comprising: positioning a nonmagnetic sheet with recessed regions; filling the recessed regions with a soft-magnetic material using additive manufacturing; and fixing the soft-magnetic material to the sheet in a material-bonded manner.
    Type: Application
    Filed: March 19, 2020
    Publication date: June 23, 2022
    Applicant: Siemens Aktiengesellschaft
    Inventors: Carsten Schuh, Rolf Vollmer
  • Publication number: 20220136563
    Abstract: A complex ring element includes first and second rings arranged such that their axes lie on a shared axis and disposed adjacent to one another when viewed in the direction of the shared axis, with one of the first and second rings representing a shaft of a rotor or being connected to a shaft of the rotor. A connecting element made of metal interconnects the first and second rings of metal such that outer peripheral surfaces of the first and second rings are partially overlapped when viewed in the direction of the shared axis. The connecting element is configured to extend circumferentially as viewed in the peripheral direction about the shared axis and is produced by an additive application method.
    Type: Application
    Filed: December 19, 2019
    Publication date: May 5, 2022
    Applicant: Siemens Aktiengesellschaft
    Inventors: REINER SEUFERT, ROLF VOLLMER
  • Publication number: 20220131446
    Abstract: Various embodiments of the teachings herein include an electrical sheet for an electric machine, the electrical sheet comprises: two plates of a ferromagnetic material, the two plates arranged parallel to one another at a distance from one another forming an interior between the two; and a fluid in the interior. The two plates are connected to one another at respective edges circumferentially in a fluid-tight manner.
    Type: Application
    Filed: March 4, 2019
    Publication date: April 28, 2022
    Applicant: Siemens Aktiengesellschaft
    Inventors: Carsten Schuh, Rolf Vollmer
  • Publication number: 20220069680
    Abstract: A method for manufacturing an electric machine having a stack of magnetic laminations including a stack of green blanks. A first green blank of the stack is printed. A separating layer is applied to the first green blank. At least a second green blank of a magnetic lamination is printed onto the first green blank with the separating layer. The green blanks are jointly sintered.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 3, 2022
    Inventors: Thomas Soller, Rolf Vollmer, Carsten Schuh
  • Publication number: 20220005645
    Abstract: Various embodiments include a method for producing an electrical steel sheet comprising the following steps: placing a green body comprising a first material on a substrate; structuring a surface of the green body; and thermally treating the green body.
    Type: Application
    Filed: October 10, 2019
    Publication date: January 6, 2022
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jörg Buschbeck, Gotthard Rieger, Carsten Schuh, Thomas Soller, Rolf Vollmer
  • Patent number: 11215235
    Abstract: A coupling for connection of an encoder to an electrical machine includes an encoder shaft end piece for coupling to a shaft of the encoder, and a machine shaft end piece for coupling to a shaft of the electrical machine. At least one of the end pieces has a carrier which is formed with a cavity filled with granular material, preferably steel powder, to effect a dampening of vibrations and impacts.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: January 4, 2022
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rolf Vollmer, Matthias Braun
  • Publication number: 20210379656
    Abstract: Various embodiments include a method for sintering a multicomponent sinter product comprising: forming a first component consisting of a first material printed with one or more recesses for a second component; forming the second component consisting of a second material; inserting at least a portion of the second component into the one or more recesses of the first component; and shrinking the first component and the second component onto one another by sintering.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 9, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Carsten Schuh, Thomas Soller, Rolf Vollmer
  • Publication number: 20210320571
    Abstract: In a method for producing a material layer with a layer thickness between 0.5 and 500 ?m, a suspension with a binding agent and solid particles is applied through a template onto a base area for obtaining a green body. The binding agent is driven out of the green body and a permanent cohesion of the solid particles is created by heating and/or by compaction.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 14, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: REINER SEUFERT, ROLF VOLLMER
  • Publication number: 20210281126
    Abstract: In a method for producing a material layer for a rotor of a dynamoelectric rotary machine, a first suspension with binding agent and solid particles is applied through a first screen onto a base to form a first green body, thereby reproducing a first region of a first material with a first degree of strength. A second suspension with binding agent and solid particles is applied through a second screen onto a base to form an annular second green body concentrically to a layer center, thereby reproducing a second region of a second material with a second degree of strength being higher than the first degree of strength. The first and second green bodies are joined such as to form a material recess substantially at a layer center. A permanent material bond of the first and second green bodies and the solid particles is created by heating and/or by compression.
    Type: Application
    Filed: July 10, 2019
    Publication date: September 9, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventor: Rolf Vollmer
  • Patent number: 11031838
    Abstract: A housing includes a first housing unit which includes a first bearing shield, a flange, a stator laminated core arranged between the first bearing shield and the flange, and a coating which is made of stainless steel and applied by an additive manufacturing method so as to cover the first bearing shield, the stator laminated core, and the flange and thereby form a unitary structure.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 8, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Eric Huter, Reiner Seufert, Rolf Vollmer
  • Publication number: 20210126514
    Abstract: In a method for producing a material layer by an additive process, a first suspension with binding agent and solid particles is applied through a first template onto a base area to obtain a first green body, thereby reproducing by the first template a first material region of a first material to form a magnetic flux-conductive region with a first magnetic permeability ?r>50. A second suspension with binding agent and solid particles is applied through a second template onto a base area to obtain a second green body, thereby reproducing by the second template a second material region of a second material to form a flux-blocking region with a second magnetic permeability ?r<5. The first and second green bodies are joined and a permanent, material-bonded cohesion between the first and second green bodies and the solid particles is created by heating and/or by compaction.
    Type: Application
    Filed: July 10, 2019
    Publication date: April 29, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventor: Rolf Vollmer
  • Patent number: 10965200
    Abstract: A rotating electric machine includes a stator having a segment pair of first and second active part segments, and a rotor mounted for rotation about an axis of rotation relative to the stator and including a ring-shaped reaction element extending along a reaction element circle about the axis of rotation, with a circular arc of the reaction element circle running between the two active part segments. The rotor includes magnetizable regions arranged in series along the reaction element circle, with a non-magnetic region being arranged between two adjacent magnetizable regions. The first active part segment of the segment pair of the stator includes a number of electromagnets arranged in series along a course of the circular arc, and the second active part segment of the segment pair of the stator includes a number of permanent magnets arranged in series along the course of the circular arc.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 30, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Reiner Seufert, Rolf Vollmer
  • Publication number: 20210036590
    Abstract: In a method for producing a cooling structure over a surface of a housing of a dynamo-electric rotational machine, at least one material is applied in layers by an additive manufacturing method to the surface of the housing, omitting at least one predefined region. As a result of the application of material, at least two elevations are formed, with a cooling channel being formed between the two elevations.
    Type: Application
    Filed: March 27, 2019
    Publication date: February 4, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Erich Bott, REINER SEUFERT, ROLF VOLLMER
  • Publication number: 20210006142
    Abstract: A rotating electric machine includes a stator having a segment pair of first and second active part segments, and a rotor mounted for rotation about an axis of rotation relative to the stator and including a ring-shaped reaction element extending along a reaction element circle about the axis of rotation, with a circular arc of the reaction element circle running between the two active part segments. The rotor includes magnetizable regions arranged in series along the reaction element circle, with a non-magnetic region being arranged between two adjacent magnetizable regions. The first active part segment of the segment pair of the stator includes a number of electromagnets arranged in series along a course of the circular arc, and the second active part segment of the segment pair of the stator includes a number of permanent magnets arranged in series along the course of the circular arc.
    Type: Application
    Filed: December 18, 2018
    Publication date: January 7, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: REINER SEUFERT, ROLF VOLLMER
  • Patent number: 10873228
    Abstract: A bell-shaped rotor of an electric machine includes a cylindrical segment and a conical segment, wherein the cylindrical segment has magnetically active regions and nonmagnetic regions, where the rotor is produced at least partially via an additive production method, where the electric machine includes, in particular, an outer stator, an inner stator, which is arranged concentric to the outer stator within the outer stator, and the rotor, which is arranged concentric to the outer stator and the inner stator between the outer stator and the inner stator.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: December 22, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Benjamin Volkmuth, Rolf Vollmer
  • Patent number: 10581290
    Abstract: A reluctance armature includes a shaft received in a shaft hole in a torsion-proof manner. At least one carrier body is disposed around the shaft and has radial sides as viewed in a circumferential direction. Part segments are arranged on the radial sides of the carrier body and made of anisotropic soft-magnetic material to thereby establish an armature segment which, as viewed in an axial direction, is disposed between two edge elements and forms a central section.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: March 3, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Daniel Mader, Rolf Vollmer
  • Publication number: 20200044521
    Abstract: The invention relates to a method for producing a rotor of an electric machine, which rotor is preferably designed as a squirrel-cage rotor. The end rings and/or squirrel-cage bars are produced by means of a metal powder application method. The invention further relates to an end ring for a rotor of an electric machine, said end ring in particular being produced by means of said method.
    Type: Application
    Filed: February 2, 2018
    Publication date: February 6, 2020
    Inventors: Klaus Büttner, Reiner Seufert, Rolf Vollmer