ALEXANDRIA, Va., June 9 -- United States Patent no. 12,288,651, issued on April 29, was assigned to PEGATRON Corp. (Taipei, Taiwan).
"Key structure" was invented by Ta-Yung Hsu (Taipei, Taiwan) and Chun-Cheng Chang (Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A key structure is applicable to an electronic device having a housing. The key structure includes a seat, a switch, a button, and an elastic sheet. The seat is disposed in the housing and has a first through hole. The switch is disposed on the seat. A key pillar of the button passes through the first through hole to abut against the switch. The elastic sheet includes a body, and a plurality of first elastic arms, second elastic arms a...