Fire resistant support for the human body
AssigneeCourtaulds Limited
InventorsJohn T. Scales, Anthony G. Poole, David Wilson, Anthony J. Middleton
Life of this patent
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Abstract
A resilient support for the human body, for example a mattress, comprises a resilient supporting block, for example of foamed polyurethane, and a fire resistant cover closely enclosing the block. At least part of the cover, which is use of the support, is intended to lie between the resilient block and a human body, is of stretch material and is able to conform to the adjacent surface of the resilient block when the support is subjected to deformation by a human body.
Claims5
A resilient support for the human body comprising,
- (a) a resilient supporting block,
- (b) cover means closely enclosing said block,
- (c) wherein said cover means are fire resistant,
- (d) at least that part of said cover means intended to lie between the block and a human being being of stretch material,
- (e) said stretch material having a recoverable extension of at least 20 percent in the width direction and at least 10 percent in the length direction measured on a Fryma Extensiometer according to British Standard No. 4294 using a load of 3 kg, whereby said stretch material is able to conform to the adjacent surface of the block when the support is subjected to deformation by a human being and recover sufficiently after extension so as to avoid forming creases or rucks after the block has returned to its undeformed state, said stretch material comprising,
- (f) at least 75 percent by weight of cellulosic yarn based on the weight of the fabric and wherein,
- (g) the fabric has a weight, after treatment with flame retardant, of at least 250 g/m.sup.2.
A support as claimed in caim 1, wherein said material has a recoverable extension of not less than 30 percent in the width direction and not less than 15 percent in the length direction.
Dependencies are inferred from the claim text.