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High air flow foam bedding productsRelated Patent Categories: Beds, Support Means For Discrete Portion Of User, Useable With Bed Or Surgical Support, For Head Or Neck (e.g., Pillow)High air flow foam bedding products description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20050278852, High air flow foam bedding products. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority from U.S. Provisional Application 60/578,994, filed Jun. 12, 2004. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not applicable. REFERENCE TO A MICROFICHE APPENDIX [0003] Not applicable. FIELD OF THE INVENTION [0004] The present invention relates to bedding products, e.g. pillows and mattress pillow tops, and more particularly to bedding products comprising viscoelastic foam that has high air flow and may be very soft and may have a support core. BACKGROUND OF THE INVENTION [0005] Various forms of contoured pillows have been designed to provide therapeutic support of the human body, typically the cervical spine or lumbar spine. These pillows have become quite successful. They have been designed with various inserts to allow the user to adjust the level of support. They have been made with various types of foam including resilient foam and viscoelastic foams, also known as memory foam or slow recovery foam. [0006] However, most contoured pillows, by their very designs, do not have the appearance of a conventional pillow. They generally are made of foam, for example urethane foam, and usually have a flat bottom and squared ends with the desired contour shape on the upper surface and front and/or back edges. Even if a contoured pillow is placed in a conventional pillowcase, the unconventional shape is apparent through the pillowcase. Interior decorators find such shapes undesirable for daytime coverings for beds when they are not being used for sleeping. [0007] While many contoured pillows are intended for use in supporting the human head and neck areas, contoured pillows are also used to support other parts of the body, for example for lumbar and knee support. The body supporting pillows are generally removed from the bed when the bed is made up, because if left in place they would appear as lumps in the bed coverings. [0008] Many bedding products, e.g. standard pillows and mattress pillow tops or mattress toppers, are made of viscoelastic foam. The viscoelastic foam tends to take the shape of the person sleeping on the product, i.e. it contours itself to the persons head and body. This feature has made viscoelastic foam bedding products successful. While viscoelastic foam is technically an open cell type of foam, it normally has a low airflow rating. As a result of the low airflow rating, viscoelastic foam bedding products tend to feel hot to the person sleeping on the products. SUMMARY OF THE INVENTION [0009] Embodiments of the invention are foam bedding products including viscoelastic foam having a high air flow value. Such products provide the support advantages of viscoelastic foam, but do not feel hot to the person sleeping on the products. [0010] An embodiment of the present invention comprises a pillow having a foam core having sufficient firmness to provide effective support for a user and a hyper soft high air flow viscoelastic foam shell surrounding the core and having sufficient firmness to maintain an outer shape of a conventional pillow when supporting only a pillowcase or other bed coverings. The core may have any desired contoured shape. [0011] Another embodiment comprises a method for making a bedding product. Both the core and the shell may be cut from blocks of appropriate foam. The shell is cut with a desired bedding product outer shape and in some cases with a cavity in a desired contour shape. A core is cut with the same desired contour shape. The core may then be placed into the cavity in the shell. [0012] In one embodiment, the shell is cut through from its outer surface to the cavity and may be opened to receive the core. The shell may then be permanently closed with adhesive or by sewing along the cut sides. [0013] In one embodiment, a core may be cut from a block of foam, and positioned in a mold having a conventional pillow shape. Materials may then be reacted in the mold to produce a high air flow viscoelastic foam shell surrounding the core. [0014] In another embodiment, the bedding product is a mattress topper comprising high air flow viscoelastic foam sized to cover a mattress top. One or more support cores may be carried in the topper. The topper may comprise two slabs of viscoelastic foam bonded together with one or more support cores positioned between the slabs. BRIEF DESCRIPTION OF THE DRAWINGS [0015] FIG. 1 is a front sectional view of a simple embodiment of a pillow according to the present invention. [0016] FIG. 2 is a top sectional view of the FIG. 1 embodiment of a pillow according to the present invention. [0017] FIGS. 3 through 7 are side cross sectional views of various embodiments of pillows according to the present invention. Continue reading about High air flow foam bedding products... Full patent description for High air flow foam bedding products Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this High air flow foam bedding products patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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