Patents by Inventor Thomas BUCHWALD

Thomas BUCHWALD 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: 11761235
    Abstract: A locking device having a guard lock for safety doors includes a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart. The housing includes a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor. The actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable in a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: September 19, 2023
    Assignee: K.A. Schmersal Holding GmbH & Co. KG
    Inventors: Christian Uhlenbrock, Thomas Buchwald, Yasar Cevic, Tobias Gerbracht
  • Publication number: 20220333405
    Abstract: A locking device having a guard lock for safety doors includes a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart. The housing includes a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor. The actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable in a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing.
    Type: Application
    Filed: April 29, 2022
    Publication date: October 20, 2022
    Inventors: Christian UHLENBROCK, Thomas BUCHWALD, Yasar CEVIC, Tobias GERBRACHT
  • Patent number: 11346126
    Abstract: Locking device having a guard lock for safety doors, comprising a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart, which housing comprises a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor, wherein the actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing, being shaped as a bushing and carrying radially displaceable and fixable engagement elements which lock the engagement plunger at
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: May 31, 2022
    Assignee: K.A. SCHMERSAL HOLDING GMBH & CO. KG
    Inventors: Christian Uhlenbrock, Thomas Buchwald, Yasar Cevic, Tobias Gerbracht
  • Publication number: 20200165839
    Abstract: Locking device having a guard lock for safety doors, comprising a mechanical actuator which can be fastened on a movable door part and a housing which interacts with the actuator and can be fastened to a door counterpart, which housing comprises a receptor to which the actuator can be inserted, and the housing comprises a locking element which is displaceable between an unlocked position, in which the actuator can be released, and a locked position, in which the actuator can be fixed relative to the receptor, wherein the actuator comprises an engagement tongue having an engagement recess for mechanical operative engagement with a head end of a locking element in form of an engagement plunger, the engagement plunger being guided in the housing so as to be longitudinally displaceable a spring-biased manner in the in a plunger longitudinal direction relative to an inner fixed bearing, being shaped as a bushing and carrying radially displaceable and fixable engagement elements which lock the engagement plunger at
    Type: Application
    Filed: November 20, 2019
    Publication date: May 28, 2020
    Inventors: Christian UHLENBROCK, Thomas BUCHWALD, Yasar CEVIC, Tobias GERBRACHT