Air control system for an air bed

• US 6,037,723 A
• Filed: 02/19/1999
• Issued: 03/14/2000
• Est. Priority Date: 11/01/1994
• Status: Expired due to Term

• Current Assignee: Sleep Number Corporation
• Original Assignee: Select Comfort Corporation
• Inventors: Shafer, David C., Duval, Eugene P.
• Primary Examiner(s): Ro, Bentsu
• Application Number:
  US09/253,572
• Time in Patent Office: 389 Days
• Field of Search: 318/16, 5/600, 5/613, 5/706, 5/713, 5/935
• US Class Current: 318/6
• CPC Class Codes: A47C 27/082 with non-manual inflation, e.g. with electric pumps
• CPC Class Codes: A47C 27/083 with pressure control, e.g. with pressure sensors
• CPC Class Codes: A47C 27/10 with two or more independently-fillable chambers
• CPC Class Codes: A47C 31/008 Use of remote controls
• CPC Class Codes: F04D 25/084 hand fans
• CPC Class Codes: F04D 27/004 by varying driving speed
• CPC Class Codes: Y02B 30/70 Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
• CPC Class Codes: Y10S 5/935 with adjustable firmness

Abstract

An automatic control system for controlling the firmness of a fluid supported mattress of a bed assembly. The control system includes a motorized fluid pump, a control unit for operating the pump to adjust the firmness of the air mattress, a hand held remote control unit for actuating the control unit, and a transceiver system for transmitting information signals between the hand held unit and the control unit. The air control system provides for independent control of both bladders in a two bladder air mattress from a single unit, and allows a user to consistently set the firmness of each mattress air bladder to a desired value. The air control system includes an air pump specially designed to minimize transmission of motor noise into the environment.

Claims

1. A system for selectively, adjustably controlling the firmness of a fluid supported cushion, the system comprising:

a fluid pump;

a valve assembly operably coupling said fluid pump and said fluid supported cushion in selective fluid communication, said valve assembly comprising at least one valve;

an electronic control circuit operably coupled to said fluid pump and to said valve assembly, the electronic control circuit selectively controlling the operation of said fluid pump and said valve assembly and thereby selectively controlling the firmness of said fluid supported cushion;

wherein the selective control of the operation of said fluid pump includes turning the pump on in accordance with a pump-on command and turning the pump off in accordance with a pump-off command;

further wherein the selective control of the operation of the valve assembly includes opening the at least one valve of the valve assembly in accordance with a valve-open command and closing the at least one valve of the valve assembly in accordance with a valve-close command;

a free standing, hand held control device adapted for entry of manual firmness commands by an operator, said manual firmness commands including a firmness-increase command and a firmness-decrease command, the free standing, hand held control device presenting indicia perceptible to the operator to guide the entry of said manual firmness commands; and

an electronic wireless transmission circuit responsive to said manual firmness commands to electronically communicate with said electronic control circuit;

wherein the system generates one or more of said pump-on command, pump-off command, valve-open command and valve-close command based on said manual firmness commands;

whereby the operation of said fluid pump and said valve assembly, and thereby the firmness of said fluid supported cushion, can be selectively, remotely controlled by entry of said manual firmness commands on said free standing hand held control device to adjust the firmness of said fluid supported cushion.

2. The system of claim 1, wherein the free standing, hand held control device comprises two juxtaposed buttons, one of said two juxtaposed buttons being for entry of firmness-increase commands and the other of said two juxtaposed buttons being for entry of firmness-decrease commands.

3. The system of claim 1, wherein the indicia presented by the hand held control device comprise an up arrow in association with entry of firmness-increase commands and a down arrow in association with entry of firmness-decrease commands.

4. The system of claim 1, wherein the indicia presented by the hand held control device comprise a legible word in association with entry of firmness-increase commands and a different legible word in association with entry of firmness-decrease commands.

5. The system of claim 1, wherein the selective control of the operation of the fluid pump includes stepwise adjustment of the speed of operation of said fluid pump.

6. The system of claim 1, wherein the fluid pump is operable at at least three different target speeds in accordance with the manual firmness commands.

7. The system of claim 6, wherein the fluid pump is operable at at least two different transitional speeds in accordance with the manual firmness commands.

8. The system of claim 1, wherein the system calculates a pressure associated with the fluid supported cushion, compares the calculated pressure with a target pressure, and causes the selective control of the operation of the fluid pump and the selective control of the operation of the valve assembly in accordance with the comparison.

9. The system of claim 1, wherein the system estimates an amount of time to operate the fluid pump in accordance with the manual firmness commands.

10. The system of claim 1, further comprising a timer operably coupled to said electronic control circuit in association with said control of the operation of said fluid pump and said valve assembly.

11. The system of claim 1, wherein at least one of said valve-open command and said valve-close command comprises an electronic signal.

12. The system of claim 1, wherein the free standing, hand held control device comprises a plurality of buttons for entry of said manual firmness commands.

13. The system of claim 1, wherein the free standing, hand held control device comprises at least one button for entry of said manual firmness commands.

14. The system of claim 1, wherein said indicia perceptible to the operator to guide the entry of said manual firmness commands comprise an indicator presenting a visual indication related to mattress firmness.

15. The system of claim 14, wherein said indicator is an analog indicator.

16. The system of claim 14, wherein said indicator is a pressure indicator.

17. The system of claim 14, wherein said indicator is a digital display.

18. The system of claim 1, wherein said electronic wireless transmission circuit communicates with said electronic control circuit by radio signals.

19. A system for selectively, adjustably controlling the firmness of a fluid supported cushion, the system comprising:

a fluid pump;

a valve assembly operably coupling said fluid pump and said fluid supported cushion in selective fluid communication, said valve assembly comprising at least one valve;

an electronic control circuit operably coupled to said fluid pump and to said valve assembly, the electronic control circuit selectively controlling the operation of said fluid pump and said valve assembly and thereby selectively controlling the firmness of said fluid supported cushion;

wherein the selective control of the operation of said fluid pump includes turning the pump on in accordance with a pump-on command and turning the pump off in accordance with a pump-off command;

further wherein the selective control of the operation of the valve assembly includes opening the at least one valve of the valve assembly in accordance with a valve-open command and/or closing the at least one valve of the valve assembly in accordance with a valve-close command; and

a control device adapted for entry of firmness commands by an operator, said firmness commands including a firmness-increase command and/or a firmness-decrease command, said control device being constructed for communication with the operator and with the electronic control circuit, at least a portion of said communication being remote communication free of physical connection;

wherein the system generates one or more of said pump-on command, pump-off command, valve-open command and valve-close command based on said firmness commands;

whereby the operation of said fluid pump and said valve assembly, and thereby the firmness of said fluid supported cushion, can be selectively, remotely controlled by entry of said firmness commands to adjust the firmness of said fluid supported cushion.

20. The system of claim 19, wherein said control device is a free standing control device.

21. The system of claim 19, wherein said control device is a hand held control device.

22. The system of claim 19, wherein said firmness commands are manual firmness commands.

23. The system of claim 19, further comprising a wireless transmission circuit responsive to said firmness commands to communicate with said electronic control circuit.

24. The system of claim 23, wherein said wireless transmission circuit comprises an electronic wireless transmission circuit to electronically communicate with said electronic control circuit.

25. The system of claim 19, wherein at least one of said valve-open command and said valve-close command comprises an electronic signal.