Oscar J Kårekull

Title: Oscar J. Kårekull and a Hearing Protector Designed for Comfort and Noise Attenuation.

Introduction

Oscar J. Kårekull is an inventor associated with Huskvarna, Sweden. His patent work includes a hearing-protection design that aims to address wearing comfort and noise attenuation as related but more independently adjustable considerations. Kårekull is associated with 3M Innovative Properties Company.

Latest Patents

Kårekull is credited with 1 patent: “Hearing Protector with Spring Element and a Carrier.” The invention describes a hearing protector with two earmuffs, each comprising a cushion, cup, and carrier, together with a headband or helmet mounts, earmuff attachment means, and spring elements.

The design forms one mass-spring system from each carrier and cushion, and another from each cup and spring element. The spring elements mechanically decouple the cups from the carriers. This arrangement is intended to help prevent pressure from the headband or helmet mounts on the carriers and cushions from affecting the spring elements, allowing comfort and noise-attenuation properties to be designed with less conflict. The disclosure also describes a method for retrofitting a hearing protector with spring elements and carriers.

Career Highlights

The available information identifies Kårekull’s hearing-protection patent and his association with 3M Innovative Properties Company. The invention focuses on the mechanical relationship among earmuff components and how that relationship may influence fit and sound attenuation.

Collaborations

Kårekull’s listed coworker is Tim S. Hjertberg. The available information does not specify further details about their collaboration.

Conclusion

Oscar J. Kårekull’s patent presents a hearing-protector structure that mechanically separates components to support the independent consideration of wearing comfort and noise attenuation.