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US 4,897,890 AGranted
Air control system for air bed
OwnerRobert A. Walkerinventor
Life of this patent
Estimating the term…
Abstract
An air pump having a diaphragm moved with a solenoid operates 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.
Claims20
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, control means for controlling the electric power to the electric powered means and the flow of air from the pump means, hose means connecting the pump means with the control means and the control means with the air mattress for carrying air from the pump means to air mattress via the control means, said control means having first means operable to selectively allow air flow from the pump means through the control means to the air mattress and block the flow of air from the air mattress, switch means for connecting the electric powered means to a source of electric power, said switch means being operated by the first means in response to movement of the first means to a position where the first means allows air to flow to the air mattress to connect the electric powered means to a source of electric power thereby operating the pump means, and second means separate from the first means operable to vent air from the air mattress thereby regulating the pressure of the air in the air mattress.
An apparatus for supplying fluid under pressure to means for accommodating fluid under pressure comprising:
- pump means operable to supply fluid under pressure, power means for operating the pump means, control means for controlling the power means and flow of fluid from the pump means to the means for accommodating fluid under pressure, said control means having first means movable to a first position to allow flow of fluid from the pump means to the control means and then to the means for accommodating fluid under pressure and to a second position to block the flow of fluid from the means for accommodating fluid under pressure, and switch means operated by the first means when the first means is in the first position to connect the power means to a source of power thereby operating the pump means when the first means allows fluid to flow from the pump means to the means for accommodating fluid, and second means separate from the first means operable to allow fluid to flow from the means for accommodating fluid under pressure.
Dependencies are inferred from the claim text.