Back to results
US 4,357,724 AGranted
Pneumatic core for adjustable firmness of mattresses, cushions and the like
OwnerGuy Laforestinventor
Life of this patent
Estimating the term…
Abstract
A pneumatic core for mattresses, cushions, car seats and the like, is disclosed. The core comprises an upper sheet of rubberized cloth and a lower sheet of flexible rubber material forming a plurality of protrusions when inflated.
Claims2
In a combination with a mattress, cushion, car seats and the like articles, having an inner coil spring structure, a pneumatic core overlying said structure and comprising an upper sheet of rubberized, non-elastic cloth and a lower sheet of flexible, elastic rubber forming a plurality of protrusions inserted in the openings of the coil springs of said inner coil spring structure.
Dependencies are inferred from the claim text.