Patents by Inventor Martin Lehmann

Martin Lehmann 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).

  • Publication number: 20220021285
    Abstract: A rotor for an electric motor includes a shaft having a central portion supporting a laminated core of an electrical sheet material. The central portion is also composed of an electrical sheet material. The ends of the rotor shaft may be formed from a different material than the material of the central portion, and may be connected to the central portion by a force-fitting interference fit and/or a knurled interference fit. An electric motor having such a rotor and a method for producing a such a rotor are provided.
    Type: Application
    Filed: October 9, 2019
    Publication date: January 20, 2022
    Inventor: Martin LEHMANN
  • Patent number: 11130088
    Abstract: A multi-modal multi-media air filtration system which can include: a base having one or more connection features and a filter media assembly, the filter media assembly being configured to attach to the base portion at a first end. The filter media assembly can then also include a first filter media extending across a first air flow path and a second filter media extending across a second air flow path. The air filtration assembly can then also include an actuation assembly configured to selectively open or close one of the first air flow path or the second air flow path so as to alternate the degree of filtration passing through the filter media assembly based on the degree of filtration provided by the first or second filter media.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: September 28, 2021
    Assignee: MANN+HUMMEL GmbH
    Inventors: Thomas Loehl, Anja Koronai-Bauer, Rodrigo Reyes, Martin Lehmann, Tina Davis, Matthew Currin
  • Patent number: 11105379
    Abstract: A joint arrangement includes comprising a joint, a nut and an adapter unit. The joint has an inner hub, an outer hub, balls and a cage with recesses for the balls. The inner hub has a recess with an inner toothing for receiving a first shaft. A cavity of the joint arrangement located around the balls is closed on two end sides by a respective sealing device. The adapter unit includes a first adapter portion and a second adapter portion which cooperate to transmit torque across the joint arrangement to or from a second shaft.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: August 31, 2021
    Assignee: Neumayer Tekfor Engineering GmbH
    Inventors: Christian Fuchs, Martin Lehmann, Daniel Schoener
  • Publication number: 20210238539
    Abstract: The present invention is related to an improved method for production of 7-dehydrocholesterol (7-DHC), an important intermediate towards biotechnological production of vitamin D3 or derivatives/metabolites thereof. The invention features modified yeast strains expressing enzymes having improved C-8 sterol isomerase activity leading to increased ratios of 7-DHC in the sterol mix.
    Type: Application
    Filed: May 21, 2019
    Publication date: August 5, 2021
    Inventors: Christopher Mark FARRELL, Lisa Ann LAPRADE, Otto Martin LEHMANN, Joshua TRUEHEART, Bastien Jean Wolfgang CHEVREUX
  • Publication number: 20210222222
    Abstract: The present invention is related to an improved method for production of 7-dehydrocholesterol (7-DHC), an important intermediate towards biotechnological production of vitamin D3 or derivatives/metabolites thereof. The invention features modified host strains expressing enzymes having improved C-5 sterol 5 desaturase activity and their use in a process for production of vitamin D3 or derivatives and/or metabolites thereof.
    Type: Application
    Filed: May 21, 2019
    Publication date: July 22, 2021
    Inventors: Christopher Mark FARRELL, Lisa Ann LAPRADE, Otto Martin LEHMANN, Joshua TRUEHEART, Bastien Jean Wolfgang CHEVREUX
  • Publication number: 20210180103
    Abstract: The present invention is related to production of a sterol mix in a modified yeast cell, wherein the amount of zymosterol present in said mix is dramatically reduced or abolished via modification of sterol acyltransferase activity within said yeast. The modified yeast cell can be used for production of vitamin D3 or derivatives and/or metabolites thereof.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 17, 2021
    Inventors: Hans-Peter HOHMANN, Regina LEBER, Martin LEHMANN, Corinna ODAR, Barbara PETSCHACHER, Harald PICHLER, Birgit PLOIER
  • Publication number: 20210131685
    Abstract: A train station has at least one transportation route for traffic of vehicles, wherein the at least one transportation route is provided with a vehicle tunnel. At least one public waiting area is arranged adjacent to the at least one transportation route. An enclosure is provided in which the at least one public waiting area is arranged, wherein the enclosure has at least one side wall. At least one ambient air purification arrangement for purifying ambient air is provided that has one or more filter units for separating solid, liquid or gaseous ambient air pollutants from the ambient air. The one or more filter units are arranged at and/or in the at least one side wall of the enclosure.
    Type: Application
    Filed: January 12, 2021
    Publication date: May 6, 2021
    Inventors: Eric Thébault, Andreas Beck, Bastian Meister-Magsino, Steffen Kroll, Johannes Stuerner, Christoph Schulz, Karlheinz Muenkel, Gerrit-Tobias Speidel, Martin Lehmann, Andreas Pelz, Thilo Mueller, Jan-Eric Raschke, Andreas Kloz, Gilles Huet, Jérôme Migaud
  • Publication number: 20210115412
    Abstract: The present invention is related to modified sterol acyltransferase enzymes with improved activity and/or specificity towards acylation of the vitamin D3 precursor 7-dehydrocholesterol (7-DHC) to be used in biotechnological production of vitamin D3. The invention further relates to a yeast strain expressing said modified enzymes and their use in a process for production of vitamin D3 or derivatives and/or metabolites thereof.
    Type: Application
    Filed: May 21, 2019
    Publication date: April 22, 2021
    Inventors: Christopher Mark FARRELL, Lisa Ann LAPRADE, Otto Martin LEHMANN, Joshua TRUEHEART
  • Publication number: 20210095325
    Abstract: The present invention is related to modified sterol acyltransferase enzymes with improved activity and/or specificity towards acylation of the vitamin D3 precursor 7-dehydrocholesterol (7-DHC) to be used in biotechnological production of vitamin D3. The invention further relates to a host strain expressing said modified enzymes and their use in a process for production of vitamin D3 or derivatives and/or metabolites thereof.
    Type: Application
    Filed: May 21, 2019
    Publication date: April 1, 2021
    Inventors: Otto Martin LEHMANN, Harald PICHLER, Holly STOLTERFOHT
  • Patent number: 10683781
    Abstract: An adjustable camshaft for a valve train of an internal combustion engine may include an inner shaft that is rotatable in an outer shaft, a phase shifter by which the outer shaft and/or the inner shaft are/is adjustable in a phase position formed around an axis of rotation, and a bearing portion for bearing the camshaft, via which the phase shifter can be supplied with a pressurizing medium. The inner shaft may comprise an end on which a screw flange is arranged, and a rotor of the phase shifter may be connected to the screw flange. A free end of the inner shaft comprises a duct that coincides with the axis of rotation for at least partially supplying the phase shifter with a pressurizing medium. The duct may extend at least into the bearing portion.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: June 16, 2020
    Assignees: THYSSENKRUPP PRESTA TECCENTER AG, THYSSENKRUPP AG
    Inventors: Michael Kunz, Bernd Mann, Uwe Dietel, Martin Lehmann
  • Patent number: 10633684
    Abstract: The present invention provides an improved biotechnological production of riboflavin (also referred herein as vitamin B2) through modification in the operon containing the riboflavin biosynthetic genes (rib operon), in particular modifications of/in the leader sequences (rib leader) upstream of the corresponding riboflavin biosynthetic genes (rib operon). Furthermore, the present invention relates to genetically engineered microorganisms carrying said modified sequences, processes to generate said modified sequences/microorganisms and the use thereof for production of riboflavin.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: April 28, 2020
    Assignee: DSM IP ASSETS B.V.
    Inventors: Martin Lehmann, Hans-Peter Hohmann, Dietmar Laudert, Michael Hans
  • Patent number: 10513148
    Abstract: A connecting arrangement for connecting a shaft to a component is provided. The connecting arrangement includes at least one adapter device with is connectable to the shaft at least in a force-fitting and/or form-fitting manner, and contact surfaces of the component and of the adapter device are configured in a manner matching each other to inhibit rotation relative to one another about a longitudinal axis of the adapter.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: December 24, 2019
    Assignee: Neumayer Tekfor Engineering GmbH
    Inventors: Christian Fuchs, Thomas Etzold, Martin Lehmann
  • Publication number: 20190282944
    Abstract: A multi-modal multi-media air filtration system which can include: a base having one or more connection features and a filter media assembly, the filter media assembly being configured to attach to the base portion at a first end. The filter media assembly can then also include a first filter media extending across a first air flow path and a second filter media extending across a second air flow path. The air filtration assembly can then also include an actuation assembly configured to selectively open or close one of the first air flow path or the second air flow path so as to alternate the degree of filtration passing through the filter media assembly based on the degree of filtration provided by the first or second filter media.
    Type: Application
    Filed: September 19, 2018
    Publication date: September 19, 2019
    Inventors: Thomas Loehl, Anja Koronai, Rodrigo Reyes, Martin Lehmann, Tina Davis, Matthew Currin
  • Patent number: 10358949
    Abstract: A camshaft may have a bearing shaft configured as a hollow shaft in which an inner shaft is disposed concentrically relative to the bearing shaft. The inner shaft may be twistable relative to the bearing shaft. A first cam segment having a first recess for receiving the bearing shaft may be disposed on the bearing shaft, may be rotatable relative to the bearing shaft, and may be connected in a rotationally fixed and axially fixed manner to the inner shaft. A second cam segment having a second recess for receiving the bearing shaft may be disposed on the bearing shaft. The second cam segment may have at least two cam contours and may be fastened on the bearing shaft so that the second cam segment is rotationally fixed to the bearing shaft and arranged in an axially displaceable manner on the bearing shaft.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: July 23, 2019
    Assignee: THYSSENKRUPP PRESTA TECCENTER AG
    Inventors: Michael Kunz, Martin Lehmann
  • Patent number: 10316705
    Abstract: A camshaft for a valve drive of an internal combustion engine having a variable valve opening time may include an outer shaft and an inner shaft that extends through the outer shaft, with the inner shaft being held rotatably with respect to the outer shaft. The camshaft may further include a cam having a multiple-piece configuration, comprising a first part cam and a second part cam. Either the first part cam or the second part cam may be connected fixedly to the outer shaft so as to rotate with it, and the other part cam may be connected fixedly to the inner shaft so as to rotate with it. The camshaft may also include a bearing inner ring of a shaft bearing that is held on the outer shaft, with one of two second part cams comprising an axial attachment that forms at least one part of the bearing inner ring.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: June 11, 2019
    Assignee: THYSSENKRUPP PRESTA TECCENTER AG
    Inventors: Uwe Dietel, Bernd Mann, Michael Kunz, Martin Lehmann
  • Patent number: 10309269
    Abstract: A camshaft adjusting device of a drive, such as a motor vehicle drive, for example, for adjusting a phase position of a cam segment may include a camshaft and a phase shifter that is operatively connected to the camshaft. The camshaft may comprise a shaft segment including an inner shaft and an outer shaft at least partially surrounding the inner shaft. The camshaft adjusting device may further comprise a drive segment for driving the shaft segment and a cam segment that is connected in a form-fitting and/or force-fitting manner to the outer shaft. The phase shifter may comprise a rotor element and a stator element. A compensating element for compensating for part tolerances between the camshaft and the phase shifter can be disposed at least in sections between the rotor element and the drive segment.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: June 4, 2019
    Assignees: THYSSENKRUPP PRESTA TECCENTER AG, THYSSENKRUPP AG
    Inventors: Martin Lehmann, Michael Kunz
  • Publication number: 20190145466
    Abstract: A joint arrangement includes comprising a joint, a nut and an adapter unit. The joint has an inner hub, an outer hub, balls and a cage with recesses for the balls. The inner hub has a recess with an inner toothing for receiving a first shaft. A cavity of the joint arrangement located around the balls is closed on two end sides by a respective sealing device. The adapter unit includes a first adapter portion and a second adapter portion which cooperate to transmit torque across the joint arrangement to or from a second shaft.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 16, 2019
    Inventors: Christian FUCHS, Martin LEHMANN, Daniel SCHOENER
  • Nut
    Publication number: 20190107142
    Abstract: A nut with a nut body with several clamping segments at an upper end face of the nut body has an internal thread with at least a first portion and a second portion. The first portion has a first thread pitch that ends at a lower end face of the nut body opposite the upper end face. The second portion has a second thread pitch which is smaller than the first thread pitch. The internal thread may include a third portion having a third thread pitch at least partially located at the clamping segments, where the second portion is between the first and third portions. The third thread pitch may be the same as the first thread pitch.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 11, 2019
    Inventors: Thomas ETZOLD, Martin LEHMANN
  • Patent number: 10208632
    Abstract: An adjustable camshaft may include an outer shaft that is hollow and an inner shaft received in the outer shaft and rotatable in the outer shaft. The inner shaft may include a cavity into which oil can be applied. At least a first radial opening may be configured in the outer shaft and at least a second radial opening may be configured in the inner shaft. Thus oil can flow between the cavity and an outside of the outer shaft during overlap of the first radial opening and the second radial opening. The first radial opening on an inside of the outer shaft may have a greater cross-section than on the outside of the outer shaft.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: February 19, 2019
    Assignee: THYSSENKRUPP PRESTA TECCENTER AG
    Inventors: Marcel Weidauer, Bernd Mann, Uwe Dietel, Juergen Meusel, Michael Kunz, Martin Lehmann
  • Patent number: 10151769
    Abstract: A measuring device having at least one at least approximately tubular probe device, by means of which an impact pressure, a total pressure or a dynamic pressure of a flow can be determined, and which is designed movable at least between a first operating state and a second operating state, where the probe device can be moved by an actuating unit in a controlled manner between the first operating state and the second operating state and held in said states.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: December 11, 2018
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Martin Lehmann