ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,225,676, issued on Feb. 11, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Programmable logic controller, and base unit and module units thereof" was invented by Yohei Isoda (Tokyo), Yoshikazu Murata (Tokyo) and Masatoshi Toyonaga (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A programmable logic controller capable of maintaining waterproofness or dustproofness includes a base unit with a substrate, a base case housing the substrate, and at least one holding part to hold a connection unit which is one of a plurality of module units. The connection unit includes a module-side connector, an engagement mechanism to be detachably engaged with t...