ALEXANDRIA, Va., June 2 -- United States Patent no. 12,642,404, issued on June 2, was assigned to HUSQVARNA AB (Huskvarna, Sweden).
"Valve arrangement for an industrial dust extractor" was invented by Axel Sjoberg (Vastra Frolunda, Sweden), Karl Elmestrand (Savedalan, Sweden) and Jonas Eriksson (Knivsta, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A valve arrangement (900) for generating a pulse of air (1100) to clean an air filter (125) of a pre-separator (120), the arrangement (900) comprising: a main valve closure body (950) arranged to seal a passage (951) between a high pressure (P2) side and a low pressure (P3) side of the valve arrangement (900), a control body (940), connected to the main v...