Chairs and seats – Bottom or back – Having fluent material
Reexamination Certificate
2006-05-30
2006-05-30
Nelson, Jr., Milton (Department: 3636)
Chairs and seats
Bottom or back
Having fluent material
C297SDIG010
Reexamination Certificate
active
07052090
ABSTRACT:
An adaptive seat and backrest cushion, divided into a seat cushion and a backrest cushion of essentially the same construction. A number of webs are introduced between an upper skin and a lower skin of an airtight shell by welding or gluing. The first webs are of simple construction, the second webs are of double construction each with a cavity between the webs. The space within the shell is filled with compressed air at a pressure p1, the cavities can be pressurised as required with compressed air at a pressure of p2, where p2>p1. The thickness as well as the softness of the seat or backrest cushion can thus be altered.
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Jenkens & Gilchrist P.C.
Jr. Milton Nelson
Prospective Concepts AG
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