ALEXANDRIA, Va., March 26 -- United States Patent no. 12,260,725, issued on March 25, was assigned to HOCHIKI Corp. (Tokyo).
"Fire detection apparatus" was invented by Keisuke Washizu (Tokyo) and Hiroki Masuzawa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a sensor 100 provided with a detection element 700 for detecting heat of a heat air current generated in association with a fire in a monitoring area, in which the detection element 700 is disposed so that a detector protrudes from a predetermined base portion of the sensor 100, the sensor 100 includes a control structure that has a stepped portion higher than the predetermined base portion, the control structure being configured to gu...