US PATENT SUBCLASS 297 / 452.27
.~.~.~.~ Different densities of foam

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

452.1  DF  BOTTOM OR BACK {12}
452.21  DF  .~ Contoured bottom {2}
452.23  DF  .~.~ Laterally extending contour {3}
452.26  DF  .~.~.~ Preshaped foam pad {1}
452.27.~.~.~.~ Different densities of foam

DEFINITION

Classification: 297/452.27

Different densities of foam:

(under subclass 452.26) Device in which the preshaped contoured pad comprises two layers or areas made of different types of foams; i.e., foams having different hardness or resiliency.