ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,152, issued on March 25, was assigned to Entos Oy (Mikkeli, Finland).
"Retrofittable controller of exhaust-air blower" was invented by Aki Pohjalainen (Mikkeli, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "The application relates to a retrofittable controller (126) according to one embodiment for a building's exhaust air blower (100). The controller comprises a processor unit, a data transfer unit, and a memory unit. The controller further comprises a sensor unit with at least one sensor for measuring the exhaust air arriving at the exhaust air blower, and a control unit which is adapted to regulate operation of a fan motor on the basis o...