ALEXANDRIA, Va., July 28 -- United States Patent no. 12,690,515, issued on July 28, was assigned to Milwaukee Electric Tool Corp. (Brookfield, Wis.).
"String trimmer head" was invented by Beth E. Cholst (Wauwatosa, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A trimmer head for use with a string trimmer includes a drive shaft includes a housing rotatable about a rotational axis. The housing includes a main body defining a cavity, and a cap removably coupled to the main body. The trimmer head includes a spool supported in the cavity and operable to support line to be dispensed, a retainer positioned between the housing and the spool, and a connection member positioned within the housing and configured ...