Back to results
US 4,914,762 AGranted
Inflatable cushion
OwnerLuigi Perali, Costanza Peraliinventors
Life of this patent
Estimating the term…
Abstract
The inflatable cushion includes a front and rear cloths or flexible sheets having a substantially trapezoidal outline, a peripheral band arranged between and tightly sealed to the front and rear cloths to delimit therewith a sealed enclosure, and a valve means or opening for controllably supplying a fluid to, and discharging it from, the enclosure.
Claims4
An inflatable cushion having:
- a front larger cloth and a rear narrower cloth each having a major and a smaller base and two sides which define a substatially trapezoidal border outline,
- an intermediate band extending between, and tightly sealed to, the borders of said front cloth and rear cloth to delimit therewith a sealed enclosure for a fluid, said band having a narrower width along said major and said smaller base and a larger width along the two sides of said flexible sheets,
- and a check valve means for supplying a fluid to said enclosures, to erect the cushion to a biconvex lens-like configuration where it comprises an intermediate wider transverse portion and an upper portion and a lower portion growing thiner from the intermediate portion outwards.
Dependencies are inferred from the claim text.