초록 ▼

An air supply and control apparatus has an air pump to supply air under pressure to air mattresses of an air bed. A hand control having a pair of valves functions to control the operation of the air pump to supply air to the air mattresses and vent air from the air mattresses. A second embodiment of

An air supply and control apparatus has an air pump to supply air under pressure to air mattresses of an air bed. A hand control having a pair of valves functions to control the operation of the air pump to supply air to the air mattresses and vent air from the air mattresses. A second embodiment of the air supply and control apparatus has a motor driven impeller for supplying air under pressure to air mattresses. Solenoids having two coils operate valves to allow air to flow to the air mattress or vent air from the air mattress to adjust the firmness of the mattresses. A normally closed switch is opened when the solenoid opens the valve. The switch turns off one coil of the solenoid. The other coil remains energized to hold the valve open. Hand controls having switches are electrically coupled to the motor and solenoids to control the operation thereof. A third embodiment of the air control apparatus has air pump and valve assembly operable with a hand control to selectively direct air under pressure to an air mattress and vent air from the air mattress. The air mattress and air control apparatus is incorporated into a sofa bed.

대표청구항 ▼

An apparatus for supplying air under pressure to an air mattress and regulating the pressure of the air in the air mattress comprising: pump means operable to supply air under pressure, electric powered means for operating the pump means, hose means connecting the pump means with the air mattress fo

An apparatus for supplying air under pressure to an air mattress and regulating the pressure of the air in the air mattress comprising: pump means operable to supply air under pressure, electric powered means for operating the pump means, hose means connecting the pump means with the air mattress for carrying air from the pump means to air mattress, control means connected to the hose means for controlling the flow of air to and from the air mattress, said control means having valve means selectively operable to an open position to allow air to flow from the pump means to the air mattress and to a closed position to block the flow or air from the air mattress, solenoid means operable to move the valve means from the closed position to the open position, said solenoid means having a movable plunger connected to the valve means and first and second coils for generating a common magnetic field to move said plunger and valve means to the open position, normally closed first switch means connected to the first coil, rectifier means connected to the first switch means and second coil to provide DC power to the first switch means and second coil, said first switch means when closed coupling said DC power to said first coil whereby said first and second coils are energized thereby moving said plunger and valve means to the open position, second switch means for connecting the rectifier means to the electric motor, second coil, and first switch means to energize said first and second coils and move the valve means from the closed position to the open position and to energize said electric motor whereby the impeller moves air into the air mattress, said first switch means being opened by said plunger when the valve means is in the open position to de-energize said first coil, said plunger and valve means held in the open position by the continued energization of the second coil, said second switch means having actuator means movable to a position for connecting the rectifier means to the first coil and first switch means to energize said first an second coils and move the valve means from a closed position to an open position to allow air to vent from the air mattress.