Patents by Inventor Erik O. Levholt

Erik O. Levholt 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: 12376996
    Abstract: The present disclosure relates to a hearing protector (10) with a sensor module (30) having a module sensor (32). The sensor module (30) is removably attached to the cushion (22, 24) and the cup (12A, 14A) of the earmuff (12, 14) of the hearing protector (10). The hearing protector (10) according to present disclosure allows the arrangement of sensors at a hearing protector (10) in an easy and cost-efficient way even with multiple sensors. The advantage of such a hearing protector (10) is an easy, compact and reliable solution of a hearing protector (10) providing information about the environment and about the conditions of the user (100) or worker using such a hearing protector (10). Also, a method of retrofitting such a sensor module (30) to a hearing protector (1) is provided. Such a method is advantageous because reversible retrofitting of existing hearing protectors (1) not having the required functionality of sensors is provided.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: August 5, 2025
    Assignee: 3M Innovative Properties Company
    Inventors: Henning T. Urban, Jonas A. Nilsson, Abel Gladstone Mangam, Caroline M. Ylitalo, William Bedingham, Erik O. Levholt, Patrick R. T. Hjort
  • Publication number: 20240293261
    Abstract: The present disclosure relates to a hearing protector (10) with a sensor module (30) having a module sensor (32). The sensor module (30) is removably attached to the cushion (22, 24) and the cup (12A, 14A) of the earmuff (12, 14) of the hearing protector (10). The hearing protector (10) according to present disclosure allows the arrangement of sensors at a hearing protector (10) in an easy and cost-efficient way even with multiple sensors. The advantage of such a hearing protector (10) is an easy, compact and reliable solution of a hearing protector (10) providing information about the environment and about the conditions of the user (100) or worker using such a hearing protector (10). Also, a method of retrofitting such a sensor module (30) to a hearing protector (1) is provided. Such a method is advantageous because reversible retrofitting of existing hearing protectors (1) not having the required functionality of sensors is provided.
    Type: Application
    Filed: December 20, 2021
    Publication date: September 5, 2024
    Inventors: Henning T. Urban, Jonas A. Nilsson, Abel Gladstone Mangam, Caroline M. Ylitalo, William Bedingham, Erik O. Levholt, Patrick R. T. Hjort