Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
214 words
A cushion for effecting full surface contact with the peaks and valleys of the body portion of a patient situated thereabove to evenly distribute the weight of said patient on said cushion, said cushion comprising: a. a resilient one-piece first sheet of a foamed resin that supports said patient, with the portion of said first sheet most adjacent said patient having a number of criss-cross grooves therein that subdivide said portion into a plurality of spaced segments that are independently movable relative to one another, and each of said sections having a height that is immediately responsive to the magnitude of the downward force exerted thereon; and b. a second sheet of bitumen-impregnated foamed resin of substantial thickness on which said first sheet rests, with said second sheet when subjected to the weight of said patient that is transferred thereto through said first sheet slowly deforming to conform to the peaks and valleys of the portion of the patient''s body supported by said first sheet, and the deformation of said second sheet being stabilized and completed when the weight of said patient is evenly distributed over said sections and said sections are in full surface contact with the peaks and valleys of the portion of the patient''s body that rests on said first sheet.
Claim 2
Dependent Claim
214 words
A cushion for effecting full surface contact with the peaks and valleys of the body portion of a patient situated thereabove to evenly distribute the weight of said patient on said cushion, said cushion comprising: a. a resilient one-piece first sheet of a foamed resin that supports said patient, with the portion of said first sheet most adjacent said patient having a number of criss-cross grooves therein that subdivide said portion into a plurality of spaced segments that are independently movable relative to one another, and each of said sections having a height that is immediately responsive to the magnitude of the downward force exerted thereon; and b. a second sheet of bitumen-impregnated foamed resin of substantial thickness on which said first sheet rests, with said second sheet when subjected to the weight of said patient that is transferred thereto through said first sheet slowly deforming to conform to the peaks and valleys of the portion of the patient''s body supported by said first sheet, and the deformation of said second sheet being stabilized and completed when the weight of said patient is evenly distributed over said sections and said sections are in full surface contact with the peaks and valleys of the portion of the patient''s body that rests on said first sheet.
Claim 3
Dependent Claim
34 words
A cushion as defined in claim 1 which, in addition includes: c. a pliable bitumen-impervious membrane interposed between said first and second sheets to prevent bitumen from said second sheet discoloring said first sheet.
Claim 4
Dependent Claim
36 words
A cushion as defined in claim 1 which, in addition, includes: c. a third sheet on which said second sheet rests, with said third sheet being of the same composition and structure as said first sheet.
Claim 5
Dependent Claim
24 words
A cushion as defined in claim 3 which, in addition, includes: d. a resilient fluid-impervious envelope that encases said first, Second and third sheets.
Claim 6
Dependent Claim
31 words
A cushion as defined in claim 4 which, in addition, includes: e. means for discharging a desired quantity of a fluid into said envelope to control the resiliency of said cushion.