Inflatable seat cushion

Claim 1

A FLUID INFLATABLE CUSHION FOR A SUPPORTING SEAT ADAPTED TO THE SHAPE OF THE SEAT AND TO THE SHAPE OF THE BUTTOCKS AND THIGHS OF THE OCCUPANT OF THE SEAT AND INCLUDING FLUID INLET AND FLUID STOPPER MEANS, SAID CUSHION COMPRISING: A TOP AND A BOTTOM SHEET OF ELASTOMERIC FLUID IMPERVIOUS MATERIAL BEING JOINED TOGETHER AT THEIR PERIPHERAL EDGES TO FORM A FORWARD AND REAR EDGE AND TWO SIDES EDGES; A NONINFLATABLE AREA WITHIN SAID CUSHION COMPRISING A PAIR OF FINGERS AND A PALM, SAID FINGERS HAVING FORWARD TIPS, SAID FINGERS BEING OF PREDETERMINED WIDTH AND EXTENDING LONGITUDINALLY TOWARD THE FORWARD EDGE OF SAID CUSHION, SAID PALM BEING OF RELATIVELY GREATER WIDTH THAN SAID FINGERS EXTENDING TRANSVERSE THE SEAT INTERMEDIATE THE SIDES AND REARWARDLY OF THE FINGERS TO PERMIT BEARING CONTACT OF THE THIGHS AND BUTTOCKS OF THE OCCUPANT DOWNWARDLY ON THE SEAT; AND A PLURALITY OF TRANSVERSELY EXTENDING TUBES POSITIONED BETWEEN THE SHEETS FORWARDLY OF SAID FINGERS INTERMEDIATE THE TIPS OF SAID FINGERS AND THE FORWARD JOINED EDGE OF SAID CUSHION, SAID TUBES BEING OF RELATIVELY MORE RIGID MATERIAL THAN THE BALANCE OF SAID CUSHION AND A PLURALITY OF SAID TUBES BEING POSITIONED REARWARDLY OF SAID PALM INTERMEDIATE THE PALM AND THE REAR EDGE OF SAID CUSHION, SAID TUBES PERMITTING A FREE FLOW OF FLUIDS FROM ONE INFLATABLE PORTION OF THE CUSHION TO ANOTHER.