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https://drivepatents.com/patents/974916 · 14 May 2014
A shock-absorbing device (1) comprising an outer container (2) which is flexible and impermeable to air, defining a primary outer volume (2a); a primary inner container (3) which is permeable to air, housed in the outer container (2), defining a primary in...
https://drivepatents.com/patents/1004555 · 7 Mar 2012
It is provided a supporting device (1) comprising an outer wrapper (2) impervious to gas passage and adapted to define a housing volume (2a); an inner wrapper (4) permeable to gas passage, defining an operating volume and adapted to be housed within the ho...