US PATENT SUBCLASS 5 / 644
.~.~ Fluent material containing

Current as of: June, 1999
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5 /   HD   BEDS

630  DF  SUPPORT MEANS FOR DISCRETE PORTION OF USER, USEABLE WITH BED OR SURGICAL SUPPORT {5}
636  DF  .~ For head or neck (e.g., pillow) {9}
644.~.~ Fluent material containing

DEFINITION

Classification: 5/644

Fluent material containing:

(under subclass 636) Subject matter wherein the head or neck support means includes a closed or closeable body filled with a flowable material.

(1) Note. The fluent material containing body must not be porous; once filled it must stay filled until it is emptied.

SEE OR SEARCH THIS CLASS, SUBCLASS:

654, for a support filled with fluent materials.

655.3, for a support filled with inflatable materials.

655.4, for a support filled with beads.

655.5, for a support filled with liquids or gels.

665+, for waterbed. 706+, for a fluent material filled mattress.

909, for supports containing a flowable, viscous (e.g., gel) material.

911, for bead containing.