초록 ▼

The mat disclosed has an air-tight flexible envelope closable by means of a valve and filled with a granular filling material. The filling material is lodged in a fabric sack made from a spacing fabric. The filling material is a composite body composed of at least two materials having different mech

The mat disclosed has an air-tight flexible envelope closable by means of a valve and filled with a granular filling material. The filling material is lodged in a fabric sack made from a spacing fabric. The filling material is a composite body composed of at least two materials having different mechanical properties.

대표청구항 ▼

A mat for bearing and supporting an object comprising: (a) a container defining at least one airtight and flexible compartment having at least one valve means connected to a source of vacuum for creating an evacuated condition within said compartment; (b) at least one air-permeable bag disposed with

A mat for bearing and supporting an object comprising: (a) a container defining at least one airtight and flexible compartment having at least one valve means connected to a source of vacuum for creating an evacuated condition within said compartment; (b) at least one air-permeable bag disposed within said compartment, said bag comprising an upper wall and a lower wall joined in a manner to define an enclosed region, said upper wall and said lower wall being connected within said enclosed region by a plurality of spacer threads such that said bag has a thickness that is maintained substantially uniform; and (c) a granular material disposed within said enclosed region, said mat having a first, unevacuated condition and a second, evacuated condition, said granular material being of a granule size to permit said granular material to circulate freely within said region when said mat is in said first unevacuated condition, and said mat in said second, evacuated condition being adapted to secure said granular material in fixed positions within said enclosed region.