Support device
OwnerShephard Hermaninventor
Life of this patent
Estimating the term…
Abstract
A support device as disclosed, such as for use as an innersole for footwear, which provides cushioned support conforming to the shape of the wearer's foot to distribute the weight of the wearer substantially evenly over the supported area. At least one air cushion layer comprising closely spaced, discrete air pockets entrapped between plastic film is adhered to a layer of soft, flexible, open cell foam. A pressure sensitive adhesive is used which impregnates the foam layer and, when in use under pressure, coats the plastic film, thereby reinforcing it against leakage or rupture and conforming it semi-permanently in the pressure-distorted shape. Protective sheathing may be used, adhered to the outer surface of the air pocket layer by pressure sensitive adhesive.
Claims14
A support device resistant to bottoming out of laminar construction comprising:
- a layer of flexible, open cell foam;
- at least one air pocket layer over said open cell foam comprising air pockets entrapped between impervious flexible plastic film and said open cell foam;
- and
- a layer of adhesion between said foam and said air pocket layer, binding said foam to said air pocket layer;
- whereby, during use, the foam will conform to the surface of the air pocket layer.
A support device resistant to bottoming out of laminar construction comprising:
- a layer of flexible, open cell polyurethane foam;
- a first air pocket layer adhered to one surface of said foam layer and a second air pocket layer adhered to the opposite surface of said foam layer, each comprising air pockets entrapped between flexible, impervious plastic film and said foam layer;
- a first layer of adhesive binding said first air pocket layer to one side of said foam layer and a second layer of adhesive binding said second air pocket layer to the opposite side of said foam layer, said adhesive comprising pressure-sensitive, rubber-based latex adhesive;
- protective outer sheathing over the surface of said first and second air pocket layers;
- and
- a layer of adhesive binding said sheathing to the outer surface of each said air pocket layers, said adhesive comprising pressure-sensitive, rubber-based latex adhesive;
- whereby, during use, the foam will conform to the surfaces of the air pocket layer.
Dependencies are inferred from the claim text.