.~ With frame means supporting or surrounding a removable bladder {3}
680
.~.~ Comprising foam
DEFINITION
Classification: 5/680
Comprising foam:
(under subclass 678) Waterbed frame in which the supporting or surrounding construction comprises a substantial amount of a material in a lightweight cellular form resulting from introduction of gas bubbles during manufacture.
(1) Note. The foams used with the frames are generally soft, semirigid polymeric foams that provide structural integrity to the frame or a soft, yielding surface for the peripheral areas of the bladder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
687, for waterbeds that may have integral foam peripheral elements that do not permit the removal of the bladder.
