ALEXANDRIA, Va., March 24 -- United States Patent no. 12,588,117, issued on March 24, was assigned to MILWAUKEE ELECTRIC TOOL Corp. (Brookfield, Wis.).
"Portable lighting device" was invented by Li Zhang (Dongguan City, China), Hao Cui (Dongguan City, China) and DanJun Guo (Dongguan City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable lighting device includes a housing, a light source supported by the housing, and an alkaline battery positioned within the housing and coupled to the light source. The alkaline battery is configured to provide a drive current to the light source, and an intensity of the light source is dependent on the drive current. The portable lighting device also includes a...