| 摘要 |
An envelope including a plurality of polygram-shaped prismatic bodies of precision formed resilient material, such as expanded foam, having, in cross section, a plurality of radially extending arms. The radially extending arms may all have the same radial length or may be of different radial lengths, and may all have the same distance between adjacent roots, or may have different distances between adjacent roots. In addition, each radially extending arm has sides that converge to an apex at the arm crest, thereby minimizing any propensity to link with physically adjacent bodies. The converging surfaces of the polygram-shaped prismatic bodies, as established from an arm's roots to its crest, may be planar or may be curved. Through this configuration, loft of the envelope is increased, clumping decreased, and compatibility maintained. A compaction enabled envelope is also disclosed.
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