ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,523,229, issued on Jan. 13, was assigned to S.A. Armstrong Ltd. (Scarborough, Canada).
"Self-regulating open circuit pump unit" was invented by Peter Thomsen (Scarborough, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A self-regulating fire pump unit which can be controlled to operate under required conditions for sourcing a fire protection system such as sprinklers. The fire pump unit can be operated in accordance with a control curve based on detected pressure and flow. The control curve can include: a) a first setpoint of rated total value of the system load for the pressure and the flow, b) a second setpoint of a minimum partial percentage o...