초록 ▼

Apparatus for controlling the air flow from a register of a forced air heating system. The apparatus includes walls forming a housing or cover that is adapted to be fastened to and enclose an air outlet register. The walls also form an outlet opening, and a pivotable flapper valve or wall is provide

Apparatus for controlling the air flow from a register of a forced air heating system. The apparatus includes walls forming a housing or cover that is adapted to be fastened to and enclose an air outlet register. The walls also form an outlet opening, and a pivotable flapper valve or wall is provided that is movable to close the opening. The valve is pivotable between an open position where the opening is not closed, and a closed position where the opening is obstructed, the valve being biased to the open position. The valve is located to be subjected to the force of air moving out of the register and through the housing, this force being such as to urge the valve to the closed position. The apparatus further includes a latch for holding the valve in the open position against the force of the moving air, and an electric control for disabling the latch in the presence of the flow of air. The electric control may be manually operated or it may be responsive to the ambient temperature conditions.

대표청구항 ▼

A method of controlling the air flow in a forced air system including a blower, a plurality of air outlets, and ducts leading from said blower to said outlets, each of said outlets including a flapper valve that is movable to an open outlet position and to a closed outlet position, said valves being

A method of controlling the air flow in a forced air system including a blower, a plurality of air outlets, and ducts leading from said blower to said outlets, each of said outlets including a flapper valve that is movable to an open outlet position and to a closed outlet position, said valves being normally in said open outlet position and the force of air through the ducts and to the outlet acting to move the valve to the closed outlet position, a releasable latch for holding the valve in the open outlet position, and a control including a temperature sensor for releasing the latch at a present temperature level, said method comprising the steps of opening said flapper valves, engaging said latches, operating said blower to exert a force on each of said flapper valves, at each of said outlets sensing the temperature utilizing said sensor, and releasing the latch utilizing said control when the sensed temperature is displaced from said preset temperature.