Patents by Inventor Kjell A. Hummel

Kjell A. Hummel 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: 11376162
    Abstract: An automatic darkening filter assembly for a welding protector and a welding protector that includes the automatic darkening filter assembly. The automatic darkening filter assembly has a housing that forms an opening in which a switchable light filter is arranged. The switchable light filter is retained by a first and a second resilient gasket that are arranged on opposite sides of the switchable light filter and which each extend circumferentially adjacent a periphery of the switchable light filter. The invention helps maximizing the robustness of the welding protector and facilitates assembly.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: July 5, 2022
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Johan M. P. Hansson, Kjell A. Hummel, Thomas B. Stenvall, Linus P. Bastman
  • Publication number: 20210205136
    Abstract: An automatic darkening filter assembly for a welding protector and a welding protector that includes the automatic darkening filter assembly. The automatic darkening filter assembly has a housing that forms an opening in which a switchable light filter is arranged. The switchable light filter is retained by a first and a second resilient gasket that are arranged on opposite sides of the switchable light filter and which each extend circumferentially adjacent a periphery of the switchable light filter. The invention helps maximizing the robustness of the welding protector and facilitates assembly.
    Type: Application
    Filed: March 19, 2021
    Publication date: July 8, 2021
    Inventors: Johan M. P. Hansson, Kjell A. Hummel, Thomas B. Stenvall, Linus P. Bastman
  • Patent number: 10952902
    Abstract: An automatic darkening filter assembly for a welding protector and a welding protector that includes the automatic darkening filter assembly. The automatic darkening filter assembly has a housing that forms an opening in which a switchable light filter is arranged. The switchable light filter is retained by a first and a second resilient gasket that are arranged on opposite sides of the switchable light filter and which each extend circumferentially adjacent a periphery of the switchable light filter. The invention helps maximizing the robustness of the welding protector and facilitates assembly.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: March 23, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Johan M. P. Hansson, Kjell A. Hummel, Thomas B. Stenvall, Linus P. Bastman
  • Publication number: 20190262178
    Abstract: An automatic darkening filter assembly for a welding protector and a welding protector that includes the automatic darkening filter assembly. The automatic darkening filter assembly has a housing that forms an opening in which a switchable light filter is arranged. The switchable light filter is retained by a first and a second resilient gasket that are arranged on opposite sides of the switchable light filter and which each extend circumferentially adjacent a periphery of the switchable light filter. The invention helps maximizing the robustness of the welding protector and facilitates assembly.
    Type: Application
    Filed: November 8, 2017
    Publication date: August 29, 2019
    Inventors: Johan M. P. Hansson, Kjell A. Hummel, Thomas B. Stenvall, Linus P. Bastman
  • Publication number: 20140300486
    Abstract: A wireless sensor device (10) for a high-voltage environment, which device (10) comprises a housing (12), a control unit (18) for monitoring one or more variable(s) (T) and a power supply unit (20), wherein the housing (12) is designed such that an electric field (E) is minimized and the communication unit (16) is arranged partly inside the housing (12).
    Type: Application
    Filed: October 23, 2012
    Publication date: October 9, 2014
    Inventors: Kjell Hummel, Jon Lissmats, Anders Kjellberg, Erling Pettersson, Michael Gudmundsson, Jerry Svedlund
  • Patent number: D841893
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: February 26, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Linus P. Bastman, Johan M. P. Hansson, Kjell A. Hummel
  • Patent number: D854255
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 16, 2019
    Assignee: 3M Innovative Properties Company
    Inventors: Linus P. Bastman, Johan M. P. Hansson, Kjell A. Hummel