ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,559, issued on Nov. 25, was assigned to CLAVERHAM Ltd. (Solihull, Great Britain).

"Rotary damper" was invented by Paul Brewer (Bristol, Great Britain), Reg Raval (Yatton, Great Britain) and Suat Bekircan (North East Somerset, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary damper comprising a fixed structure, a rotor configured to rotate about an axis (R-R), and two opposing bellows. The bellows each extend between the rotor and the fixed structure and are attached thereto. The bellows each define a chamber for holding hydraulic fluid and are configured to expand contract as the rotor rotates. The damper further comprises a dam...