Patents Assigned to Ewellix AB
  • Patent number: 12553469
    Abstract: A linear module has a housing, at least one guide rail on a bottom wall within the housing, and a carriage that is longitudinally translatable relative to the housing on the guide rail. The carriage extends from within the housing through at least one longitudinal slit in a side face of the housing perpendicular to the bottom wall to an outside of the housing. At least one flexible slit seal seals the longitudinal slit in a section of the slit where the carriage does not project through the slit.
    Type: Grant
    Filed: August 23, 2023
    Date of Patent: February 17, 2026
    Assignee: Ewellix AB
    Inventor: Doowon Han
  • Patent number: 12378995
    Abstract: An end cap for a carriage of a linear guide. The end cap has a closed lubrication port which is openable by operatively connecting a lubrication fitting to the lubrication port. The is formed by injection molding and the closed lubrication port of the end cap is formed by rotary demolding.
    Type: Grant
    Filed: October 4, 2022
    Date of Patent: August 5, 2025
    Assignee: Ewellix AB
    Inventors: Andreas Drügemöller, Yung-Chang Chiou, Po-Chih Huang, Fung Cheung
  • Patent number: 12336629
    Abstract: A lifting table contains a linear drive. The linear drive has a housing, a drive with an electric motor arranged outside the housing, and a linear unit arranged in the housing. In addition, a sensor device for determining a force acting on the linear drive is provided. The sensor device has a stress body, which is configured to axially support a drive-side end of the linear unit and on the inner or outer surface of which there is arranged a load sensor assembly for detecting a mechanical stress of the stress body.
    Type: Grant
    Filed: April 18, 2023
    Date of Patent: June 24, 2025
    Assignee: Ewellix AB
    Inventors: Guo Bobby, Fabian Mantl, Marcel Soltermann
  • Patent number: 12339142
    Abstract: A position transducer, a linear actuator and a method for determining a position of two components in relation to each other. The position transducer having measuring unit and a first, second, and third electrode assembly. The third electrode assembly capacitively couples the first and the second electrode assemblies to each other and is movable in relation thereto. The measuring unit is electrically conductively connected to the first electrode assembly by a first line assembly and to the second electrode assembly by a second line assembly. The measuring unit is configured to emit at least one excitation signal via the first line assembly and receive at least one readout signal via the second line assembly. The measuring unit is also designed to determine, based on readout signal, a position of the third electrode assembly in relation to the first and the second electrode assemblies.
    Type: Grant
    Filed: June 16, 2023
    Date of Patent: June 24, 2025
    Assignee: Ewellix AB
    Inventors: Christoph Riehl, Urs Kunz
  • Patent number: 12334856
    Abstract: A linear actuator and a method for heating a linear actuator. An electric motor is configured to generate rotational motion in a first operating mode of the linear actuator. A transmission mechanism is configured to convert the rotational motion generated by the electric motor into translational motion. The linear actuator is further configured to generate heat in a second operating mode.
    Type: Grant
    Filed: May 8, 2023
    Date of Patent: June 17, 2025
    Assignee: Ewellix AB
    Inventors: Larsson Reine, DagArne Rörvik
  • Patent number: 12209002
    Abstract: A lifting column includes at least five column elements which are at least partly nested, and a first and a second drive arrangement. The first drive arrangement is configured to move the three innermost column elements relative to one another. The second drive arrangement is configured to move the three outermost column elements relative to one another.
    Type: Grant
    Filed: April 18, 2023
    Date of Patent: January 28, 2025
    Assignee: Ewellix AB
    Inventors: Marcel Soltermann, Martin Voegelin, Emmanuel Eyraud, Daniel Greilinger
  • Patent number: 12044295
    Abstract: A linear actuator includes a roller screw nut, a roller screw shaft and a plurality of planetary rollers forming an inverted roller screw mechanism. A bearing supports a rotating part of the linear actuator. The bearing includes a mounting member and a plurality of bearing rollers engaging a first bearing portion of the mounting member and a second bearing portion of the rotating part. The plurality of bearing rollers is axially fixed relative to the rotating part and the mounting member. A manufacturing method for the linear actuator is also provided.
    Type: Grant
    Filed: January 9, 2023
    Date of Patent: July 23, 2024
    Assignee: Ewellix AB
    Inventor: Arnaud Groll
  • Patent number: 11986425
    Abstract: A device for orienting a platform, and a system having such a device, and a patient support having such a system. A support unit supports a load carried by the platform. Two actuators are arranged on mutually opposite sides of the support unit, and each of the actuators can be connected in articulated fashion to the platform at a respective support point. The actuators are configured to move the support points relative to the support unit independently of one another and to support the entire load carried by the platform on the support unit.
    Type: Grant
    Filed: January 10, 2022
    Date of Patent: May 21, 2024
    Assignee: Ewellix AB
    Inventors: Manuel Doppler, Martin Voegelin
  • Patent number: 11896413
    Abstract: In a sensor system for an actuator, in particular a lifting column, a force sensor is configured to detect a total force acting on an actuator part. An acceleration sensor is configured to detect an acceleration of the actuator part. Accordingly, the sensor system has a processing device, which is configured to control a drive of the actuator for moving the actuator part on a basis of the detected total force and the detected acceleration.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: February 13, 2024
    Assignee: Ewellix AB
    Inventor: Conor Slater
  • Patent number: 11754165
    Abstract: A damping system for a linear actuator, and a linear actuator. The damping system has a first sub-assembly with a first axial stop surface and a second axial stop surface. A spring-elastic spring arrangement has an initial position at a predetermined pretensioning and is axially in contact with the first and second stop surface. A second sub-assembly is mounted axially displaceable relative to the first sub-assembly and is configured to lift the spring arrangement away from the first stop surface or from the second stop surface in the case of an axial movement relative to the first sub-assembly.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: September 12, 2023
    Assignee: Ewellix AB
    Inventors: Hans Peter Panzer, Marcel Soltermann, Bernd Spigaht
  • Patent number: 11697576
    Abstract: A telescopic lifting unit with a first segment, a second segment, and a third segment. The first and second segments may be displaced relative to one another, and the second and third segments may be displaced relative to one another. The first and second segments may be moved relative to one another by a motor unit, and the second and third segments may be moved relative to one another by a cable hoist.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: July 11, 2023
    Assignee: Ewellix AB
    Inventors: Daniel Greilinger, Christoph Riehl, Marcel Soltermann
  • Patent number: 11680827
    Abstract: A position sensor for a linear actuator, a production method for a position sensor, a linear actuator with a position sensor, and a method for determining a position of a linear actuator. The position sensor has a capacitor arrangement and a data processing device. The capacitor arrangement has a first capacitor element and a second capacitor element arranged to be movable relative to the first capacitor element and designed to generate a capacitive signal. A data processing device is configured to determine the position of the second capacitor element relative to the first capacitor element based on the capacitive signal. The second capacitor element is made of an electrically conductive polymer.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: June 20, 2023
    Assignee: Ewellix AB
    Inventors: Christoph Riehl, Urs Kunz
  • Patent number: 11664714
    Abstract: A position sensor includes first and second sensor components. The second sensor component has a reading unit that is configured to evaluate a capacitive signal in relation to the position of the second sensor component relative to the first sensor component. The position sensor is in addition configured to provide the result of the evaluation at an interface of the first sensor component. A method for ascertaining a position of a second sensor component of a position sensor relative to a first sensor component of the position sensor as well as a linear actuator, are provided.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: May 30, 2023
    Assignee: Ewellix AB
    Inventors: Christoph Riehl, Marcel Soltermann
  • Patent number: 11448295
    Abstract: A linear actuator, a housing for such a linear actuator, an actuation system, and a method for assembling a linear actuator. The linear actuator has an actuating mechanism and a housing. The actuating mechanism includes a spindle and a nut and it is configured to convert rotational motion into translational motion. The housing has two housing parts and the actuating mechanism is at least partially arranged in the housing. The two housing parts form a plurality of separate cavities that are configured to receive separate components of the linear actuator, in particular of the actuating mechanism.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: September 20, 2022
    Assignee: Ewellix AB
    Inventor: Emmanuel Eyraud
  • Patent number: 11384819
    Abstract: The present invention relates to a linear module. The linear module according to an example of the present invention comprises a base plate; a screw disposed on the base plate and arranged in the longitudinal direction of the base plate; a carrier block including a hollow part surrounding a portion of the screw; a carrier block rail disposed on one side of the carrier block and arranged in the longitudinal direction of the base plate; a long rail disposed on the base plate and arranged in the longitudinal direction of the base plate; and a roller guide disposed between the carrier block rail and the long rail and to reduce the frictional force between the carrier block rail and the long rail when the carrier block moves in the longitudinal direction of the base plate.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: July 12, 2022
    Assignee: Ewellix AB
    Inventors: Sungwon Lee, Jinho Park, Doosin Kong