Patents by Inventor Tim S. Hjertberg

Tim S. Hjertberg 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: 20240189152
    Abstract: In a first aspect, the present disclosure relates to a hearing protector 10 including two earmuffs 12A, 12B each with a cushion 16A, 16B, a cup 14A, 14B and a carrier 24A, 24B. The hearing protector 10 further includes a headband 18, or alternatively two helmet mounts, with two earmuff attachment means 22A, 22B as well as a spring element 30A, 30B. The carrier 24A, 24B and the cushion 16A, 16B form a first mass-spring system. The cup 14A, 14B and the spring element 30A, 30B form a second mass spring system. The spring element 30A, 30B is configured and arranged such that the cup 14A, 14B and the carrier 24A, 24B are mechanically decoupled from each other. The advantage of such a hearing protector 10 is that the hearing protector 10 can be designed such that the aspects of comfort and noise attenuation can be addressed more independent of each other.
    Type: Application
    Filed: March 25, 2022
    Publication date: June 13, 2024
    Inventors: Oscar J, Kårekull, Tim S. Hjertberg
  • Publication number: 20220357126
    Abstract: An accessory attachment system is presented. The accessory attachment system includes a mounting rail. The mounting rail has a plurality of protrusion and recesses. The protrusions and recesses alternate in a repeating pattern along the mounting rail. The accessory attachment system also includes an accessory configured to be mounted on the mounting rail. The accessory attachment system also includes a friction plate configured to hold the accessory in a position on the mounting rail. The friction plate comprises friction feature configured to interact with the plurality of protrusions and recesses to create a friction force that holds the accessory in the position. The accessory attachment system allows for movement of the accessory along the rail with an application of force. The applied force is greater than the friction force.
    Type: Application
    Filed: June 23, 2020
    Publication date: November 10, 2022
    Inventor: Tim S. Hjertberg
  • Patent number: D925510
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: July 20, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Tim S. Hjertberg, Robert Karlsson
  • Patent number: D928754
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: August 24, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Tim S. Hjertberg, Robert Karlsson
  • Patent number: D1052558
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: November 26, 2024
    Assignee: 3M Innovative Properties Company
    Inventors: Tim S. Hjertberg, Robert Karlsson