Mattress

Abstract

A mattress is disclosed. The mattress comprises a base having a lower surface and an upper surface, and a frame which extends around at least a portion of a periphery of the base. The frame extends above the upper surface of the base to define a mattress cavity, for receiving an inflatable bladder disposed in the cavity.

1 . A mattress comprising a base having a lower surface and an upper surface, the mattress further comprising a frame which extends around at least a portion of a periphery of the base and which extends above the upper surface of the base to define a mattress cavity, the mattress further comprising an inflatable bladder disposed in the cavity. 
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . A mattress according to  claim 1 , wherein the inflatable bladder comprises an inflation inlet. 
     
     
         6 . A mattress according to  claim 5 , wherein the inflation inlet comprises a one-way valve, for limiting the flow of air into the bladder. 
     
     
         7 . A mattress according to  claim 6 , wherein the bladder further comprises a pressure relief cap, which is removably insertable within the inflation inlet, to cause the valve to open to release air from within the bladder for deflating the bladder. 
     
     
         8 . A mattress according to  claim 5 , wherein the inflation inlet is arranged to extend through the frame. 
     
     
         9 . A mattress according to  claim 1 , wherein the frame is disposed on the upper surface of the base. 
     
     
         10 . A mattress according to  claim 1 , wherein the frame is formed on a first foamed material and the base is formed of a second foamed material. 
     
     
         11 . A mattress according to  claim 10 , wherein the first foamed material comprises a greater density than the second foamed material. 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . A mattress according to  claim 1 , wherein the base comprises a plurality of upper channels formed in the upper surface. 
     
     
         16 . A mattress according to  claim 15 , wherein the upper channels comprise a first set of channels which extend substantially parallel to each other and a second set of channels which extend substantially parallel to each other. 
     
     
         17 . (canceled) 
     
     
         18 . A mattress according to  claim 16 , wherein the channels of the second set extend substantially transverse to the channels of the first set. 
     
     
         19 . A mattress according to any of  claims 16 , wherein the channels of the first set are separated from each other by a first spacing and the channels of the second set are separated from each other by a second spacing. 
     
     
         20 . (canceled) 
     
     
         21 . A mattress according to  claim 16 , wherein the channels of the first set extend substantially parallel to a longitudinal axis of the base and the channels of the second set extend substantially parallel to a lateral axis of the base. 
     
     
         22 . A mattress according to  claim 1 , further comprising a plurality of lower channels formed on the lower surface. 
     
     
         23 . A mattress according to  claim 22 , wherein the lower channels extend substantially parallel to each other. 
     
     
         24 . A mattress according to  claim 22 , wherein the lower channels extend across the base, substantially parallel to a lateral axis of the base. 
     
     
         25 . A mattress according to  claim 22  to  24 , wherein the lower channels are localised to a first and second region of the lower surface. 
     
     
         26 . A mattress according to  claim 25 , wherein the lower channels located within the first region are separated by a first spacing and the lower channels located with the second region are separated by a second spacing. 
     
     
         27 . (canceled) 
     
     
         28 . A mattress according to  claim 1 , further comprising a plurality of frame channels formed in an upper surface of each side member, which extend across the respective side member. 
     
     
         29 . A mattress according to  claim 28 , wherein the frame channels formed in each side member are localised to a first and second region of the upper surface of the respective side member. 
     
     
         30 . (canceled) 
     
     
         31 . (canceled) 
     
     
         32 . (canceled) 
     
     
         33 . (canceled) 
     
     
         34 . (canceled) 
     
     
         35 . (canceled)