ALEXANDRIA, Va., June 9 -- United States Patent no. 12,648,518, issued on June 9, was assigned to T&I Consulting AB (Saltsjobaden, Sweden).
"Trimmer head" was invented by Bo Christer Andreasson (Saltsjobaden, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trimmer head for vegetation trimming and cutting machines. The trimmer head including a housing; a cutting blade; a cutting blade shield with a plurality of through-openings; and a blowing air assembly that has at least one blowing nozzle pointing to the blade shield openings such that, in operation, a blowing air flow is directed from the blowing nozzle towards the blade shield openings."
The patent was filed on April 23, 2020, under Application ...