ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,885, issued on Feb. 10, was assigned to TOZO INC (Seattle).
"Speaker device and earphone" was invented by Qi Lin (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker device and an earphone include a housing, a coil iron support connected to the housing, a moving iron assembly, and a moving coil assembly. The moving iron assembly and the moving coil assembly are disposed on the coil iron support. A cavity is defined in the housing. A periphery of the coil iron support is embedded in the housing. The coil iron support includes a moving coil supporting portion and a moving iron supporting portion disposed on one side of the moving ...