ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,976, issued on May 13, was assigned to TMEIC Corp. (Chuo-ku, Japan).
"Wind pressure type shutter for outdoor switchboard" was invented by Keisuke Inamasa (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wind pressure type shutter includes first and second rotation shafts, and first and second flaps. The first flap rotatably hung on the first rotation shaft closes a flow path in a vertical position and opens the flow path in a position rotated from the vertical position. The second flap rotatably attached to the second rotation shaft closes the flow path and prevents the rotation of the first flap by an upstream-side end portion of the second ...