Channel-cut cushion supports

• US 8,918,935 B2
• Filed: 07/12/2012
• Issued: 12/30/2014
• Est. Priority Date: 10/17/2002
• Status: Expired due to Term

• Current Assignee: Dreamwell Limited (Serta Simmons Bedding LLC)
• Original Assignee: Dreamwell Limited (Serta Simmons Bedding LLC)
• Inventors: Gladney, Richard F.
• Primary Examiner(s): LAGMAN, FREDERICK LYNDON
• Application Number:
  US13/548,081
• Publication Number:
  US 20120297546A1
• Time in Patent Office: 901 Days
• Field of Search: 565/57, 565/58, 565/59, 571/6, 571/8, 572/7, 572/8, 572/9, 573/0, 593/5, 593/6, 563/0, 563/2
• US Class Current: 5/730
• CPC Class Codes: A47C 23/04 using springs in compression, e.g. coiled
• CPC Class Codes: A47C 27/05 with padding material, e.g. foamed material, in top, bottom, or side layers
• CPC Class Codes: A47C 27/064 Pocketed springs
• CPC Class Codes: A47C 27/142 with projections, depressions or cavities
• CPC Class Codes: A47C 27/148 of different resilience
• CPC Class Codes: A47C 27/20 with springs moulded in, or situated in cavities or openings in foamed material

Abstract

The support characteristics within a foam mattress body may be varied by inserting reinforcements into channels cut or otherwise formed within the foam.

Claims

1. A mattress comprising:

a multilayered foam body having a planar top surface, the foam body including a plurality of channels extending from the planar top surface into at least one of the foam layers defining the multilayered foam body; and

at least one insert having planar top and bottom surfaces affixed to each one of the plurality of channels, each insert reinforcing the foam body, wherein each of the plurality of channel has a physical shape configured to receive one or more of the inserts, wherein the inserts comprise foam and have a different mechanical property than the foam body, and wherein the insert does not entirely fill the channel.

2. The mattress of claim 1, wherein the insert comprises an aggregation of different materials having different mechanical properties.

3. The mattress of claim 2, wherein the different materials extend along a longitudinal axis of the channel when viewed from a surface of the channel.

4. The mattress of claim 2, wherein the different materials extend along a vertical axis of the channel when viewed from a surface of the channel.

5. The mattress of claim 2, wherein the different materials extend along both a vertical axis and a longitudinal axis of the channel when viewed from a surface of the channel.

6. The mattress of claim 1, wherein the inserts are affixed within the plurality of channels with an adhesive.

7. The mattress of claim 1, wherein the inserts are affixed within the plurality of channels by applied heat.

8. The mattress of claim 1, wherein the inserts are affixed within the plurality of channels by frictional restraint.

9. The mattress of claim 1, wherein the mechanical property is firmness.

10. A method of manufacturing a mattress comprising:

providing a plurality of rectangular foam pieces to form a body of foam shaped and sized for use as a mattress;

locating a region of the body where increased support is desired;

assembling the rectangular foam pieces to form the body having a channel in the region; and

affixing at least one insert having planar top and bottom surfaces into the channel, wherein the channel has a physical shape configured to receive the at least one insert, the insert having a different mechanical property than the body of the foam, and wherein the insert does not entirely fill the channel.

11. The method of manufacturing a mattress of claim 10, wherein the insert comprises an aggregation of different materials having different mechanical properties.

12. The method of manufacturing a mattress of claim 10, wherein the inserts comprise a string of pocket springs, foam, individual coils in a foam strip or combinations thereof.

13. The method of manufacturing a mattress of claim 10, wherein affixing at least one insert into the channel comprises applying adhesive, heat, or frictional restraint.

14. The method of manufacturing a mattress of claim 10, wherein more than one insert is affixed into a selected one of the channels, wherein each of the more than one insert has a different mechanical property and extend along a longitudinal axis of the channel when viewed from a surface of the channel.

15. The method of manufacturing a mattress of claim 10, wherein more than one insert is affixed into a selected one of the channels, wherein each of the more than one insert has a different mechanical property and extend along a vertical axis of the channel when viewed from a surface of the channel.

16. The method of manufacturing a mattress of claim 10, wherein more than one insert is affixed into a selected one of the channels, wherein each of the more than one insert has a different mechanical property and extend along both a vertical axis and a longitudinal axis of the channel when viewed from a surface of the channel.