Fluid mattress assembly with check valves

• US 6,568,013 B2
• Filed: 05/21/2002
• Issued: 05/27/2003
• Est. Priority Date: 01/08/1999
• Status: Expired due to Fees

• Current Assignee: Hill-Rom Services Incorporated (Baxter International Inc.)
• Original Assignee: Hill-Rom Services Incorporated (Baxter International Inc.)
• Inventors: Soltani, Sohrab, Romano, James J., Perez, Timothy W.
• Primary Examiner(s): Grosz, Alexander
• Application Number:
  US10/152,436
• Publication Number:
  US 20020133883A1
• Time in Patent Office: 371 Days
• Field of Search: 571/3, 571/0, 570/8, 570/6, 565/53
• US Class Current: 5/710
• CPC Class Codes: A47C 27/082 with non-manual inflation, e.g. with electric pumps
• CPC Class Codes: A47C 27/10 with two or more independently-fillable chambers
• CPC Class Codes: Y10T 137/3584 Inflatable article [e.g., tire filling chuck and/or stem]

Abstract

A mattress assembly including an inflatable central support portion and a side bolster. A check valve is configured to prevent fluid flow from at least a portion of the side bolster to the central support portion.

Claims

1. A mattress assembly comprising:

an inflatable central support portion having a head end, a foot end, a first side and a second side;

a side bolster coupled to the first side of the central support portion;

a manifold extending substantially parallel to the side bolster, the manifold being configured to be coupled to a fluid supply to supply fluid to the central support portion and the side bolster; and

a check valve being configured to provide fluid flow from the central support portion to the side bolster and to prevent fluid flow from at least a portion of the side bolster to the central support portion.

2. The mattress assembly of claim 1, further comprising a second check valve being configured to provide fluid flow from the manifold to the central support portion and to prevent fluid flow from the central support portion to at least a portion of the manifold.

3. The mattress assembly of claim 1, wherein the side bolster includes at least two chambers extending along a longitudinal axis of the side bolster, at least one of the chambers being the manifold.

4. The mattress assembly of claim 1, wherein the check valve includes a top sheet, a bottom sheet disposed substantially parallel to the top sheet, an outlet defined between the top sheet and the bottom sheet, and at least one seal configured to secure the top sheet and the bottom sheet relative to the side bolster and to position the outlet in the side bolster.

5. The mattress assembly of claim 4, wherein the check valve further includes a tube, the top and bottom sheets being sealed around the tube to provide an air inlet.

6. The mattress assembly of claim 4, wherein the top and bottom sheets cooperate to define two air openings located within the side bolster.

7. The mattress assembly of claim 1, wherein the inflatable central support portion and the side bolster are formed from a plurality of separately inflatable zones.

8. The mattress assembly of claim 7, wherein the plurality of zones include a head zone, a shoulder zone, a seat zone, and a foot zone.

9. The mattress assembly of claim 8, wherein a plurality of micro-holes are formed in a top surface of at least one of the head zone, the shoulder zone, the seat zone, and the foot zone of the inflatable central portion.

10. The mattress assembly of claim 1, further comprising a bottom cover located underneath the inflatable central support portion and the side bolster, and a top coverlet located above the inflatable central support portion and the side bolster.

11. The mattress assembly of claim 1, further comprising a plurality of baffles located within an interior region of the central support portion, the baffles being formed to include at least one aperture to permit air flow through the baffles.

12. A mattress assembly comprising:

an inflatable central support portion including a first side and a second side;

a first side bolster extending longitudinally and coupled to the first side of the central support portion;

a second side bolster extending longitudinally and coupled to the second side of the central support portion; and

a plurality of check valves coupled to the first and second side bolsters, the plurality of check valves being configured to provide fluid flow from the central support portion to the first and second side bolsters, and to prevent fluid flow from at least a portion of the first and second side bolsters to the central support portion.

13. The mattress assembly of claim 12, further comprising a plurality of check valves being configured to provide fluid flow from the first and second side bolsters to the central support portion, and to prevent fluid flow from the central support portion to at least a portion of the first and second side bolsters.

14. The mattress assembly of claim 12, wherein the plurality of check valves each include a top sheet, a bottom sheet disposed substantially parallel to the top sheet, an outlet defined between the top sheet and the bottom sheet, and at least one seal configured to secure the top sheet and the bottom sheet and to position the outlet in one of the first and second side bolsters.

15. The mattress assembly of claim 14, wherein the check valve further includes a tube, the top and bottom sheets being sealed around the tube to provide an air inlet.

16. The mattress assembly of claim 12, wherein the inflatable central support and the first and second side bolsters are formed from a plurality of separately inflatable zones.

17. The mattress assembly of claim 16, wherein the plurality of zones include a head zone, a shoulder zone, a seat zone, and a foot zone.

18. A mattress assembly comprising:

a middle portion configured to receive air from an air supply and to be inflated thereby, the middle portion having two lateral sides;

a pair of side tubes each attached to a respective side of the middle portion; and

the middle portion supporting air flow structures configured to transmit air from the middle portion to the side tubes, the air flow structures being configured to block air flow therethrough from at least a portion of the side tubes to the middle portion so that, when the middle portion loses air pressure and deflates, the side tubes remain at least partially inflated.

19. The mattress assembly of claim 18, wherein the air flow structures include check valves.

20. The mattress assembly of claim 19, wherein the plurality of check valves each include a top sheet, a bottom sheet disposed substantially parallel to the top sheet, an outlet defined between the top sheet and the bottom sheet, and at least one seal configured to secure the top sheet and the bottom sheet and to position the outlet in one of the side tubes.

21. The mattress assembly of claim 20, wherein the check valve further includes a tube, the top and bottom sheets being sealed around the tube to provide an air inlet.

22. The mattress assembly of claim 18, wherein the middle portion and the side tubes are formed from a plurality of separately inflatable zones.

23. The mattress assembly of claim 22, wherein the plurality of zones include a head zone, a shoulder zone, a seat zone, and a foot zone.

24. A mattress assembly comprising:

an inflatable central support portion including first and second sides;

a side bolster coupled to at least one of the first and second sides; and

a check valve configured to permit fluid flow into and to prevent fluid flow out of at least a portion of the side bolster, the check valve including a top sheet, a bottom sheet disposed substantially parallel to the top sheet, an outlet defined between the top sheet and the bottom sheet, and at least one seal configured to secure the top sheet and the bottom sheet relative to the side bolster and to position the outlet in the side bolster.

25. The mattress assembly of claim 24, wherein the check valve further includes a tube, the top and bottom sheets being sealed around the tube to provide an air inlet within the central support portion.

26. The mattress assembly of claim 24, wherein the top sheet and the bottom sheet of the check valve are secured to the side bolster.

27. The mattress assembly of claim 26, further comprising at least one elongated seam separating the central support portion and the side bolster, the at least one seam securing at least one of the top sheet and the bottom sheet of the check valve to the side bolster.