ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,469,656, issued on Nov. 11, was assigned to DARFON ELECTRONICS CORP. (Taoyuan, Taiwan).
"Keyswitch and keyboard thereof" was invented by Po-Wei Tsai (Taoyuan, Taiwan), Wun-Huei Wang (Taoyuan, Taiwan) and Kuei-Lin Teng (Taoyuan, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A keyswitch includes a board, a cap located above the board, a membrane circuit board disposed on the board to make first and second engaging structures of the board protrude from first and second holes of the membrane circuit board respectively, and a lifting device. The lifting device is connected to the cap and the board and includes first and second support members. The fi...