ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,509, issued on Feb. 24, was assigned to ResMed Asia Pte. Ltd. (Singapore).

"Headgear with tension limit detection feature" was invented by Teong Hong Chuah (Singapore), Ramyabai Gunalan (Singapore), Han Seong Chew (Singapore) and Jing Wen Tam (Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "Headgear for a patient interface includes one or more straps each having a first end for connecting to a mask. The first end of each strap includes a connection portion which is grippable by a user to pull the strap to increase a tension in the strap, a first rigid member and a second rigid member that extends from a resilient carrier that is connected t...