US Patent No: 4,663,789

Number of patents in Portfolio can not be more than 2000

Hydraulic baffle for waterbed mattress




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A damping structure is disclosed to float freely within the envelope of a waterbed mattress. The damping structure comprises a bottom panel of flexible sheet material with a number of tubular structure extending upwardly therefrom. Each tubular structure is coupled to the bottom panel with a portion of the bottom panel closing the bottom end of the tubular structure. The tubular structure has side walls and is closed at a top end by a top panel. The top panels are buoyant and float the tubular structures upwardly so as to suspend the bottom panel spaced above the bottom sheet of the waterbed envelope. Ports are provided through the top panels, side walls and bottom end of the tubular structures and serve to permit fluid flow into and out of the tubular structures to assist in facilitating fluid displacement within the mattress and dampen wave motion therein. The ports through the side walls are open to permit flow even when the mattress is compressed in use. The ports through the top panel are normally closed by engagement with the top sheet of the envelope and the ports through the bottom panel become closed upon compression of the mattress by engagement of the bottom panel with the bottom sheet of the envelope. The novel configuration of the bottom panel, tubular structures, and ports therethrough provides improved wave dampening.

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Patent Owner(s)

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Inventor Name Address # of filed Patents Total Citations
Smith, John W Rexdale, CA 205 7202

Cited Art Landscape

Patent Info (Count) # Cites Year
Other [Check patent profile for assignment information] (2)
* 4,430,764 Waveless waterbed with buoyant honeycomb core 6 1981
* 4,523,343 Buoyant fiber product used in improved waterbed float with hanging baffle 10 1983
* 4,475,257 Wave motion absorber for water bed mattresses 7 1982
Land and Sky Manufacturing, Inc. (1)
* 4,577,356 Waterbed mattress with baffle chambers 18 1982
LAND & SKY (2)
* 4,399,575 Waterbed mattress with unattached baffle structure 18 1981
* 4,467,485 Waterbed mattress with free floating baffle 8 1981
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
Other [Check patent profile for assignment information] (5)
D308789 Mattress 11 1987
* 5,074,001 Waterbed mattress insulation with heat transfer holes at a greater density towards foot end of mattress 0 1990
* 5,060,328 Waterbed mattress with spring insert 12 1990
* 5,159,725 Waterbed mattress with bellows spring insert 8 1992
* 5,566,408 Suspended coil wave reduction system for a water mattress 6 1995
* 5,068,934 Waterbed mattress with hexagonal polypropylene baffle structures 1 1989
* 5,172,437 Waterbed mattress with hexagonal baffle structure, and method and apparatus for manufacturing the same 0 1991
American Thermo Seal, Inc. (1)
* 4,751,757 Wave dampening device for use in a water bed 9 1987
5,563,036 Transcription factor-DNA binding assay 29 1994
Land and Sky Manufacturing, Inc. (1)
* 4,975,995 Water mattress with vertically disposed dampening cells 2 1989
* Cited By Examiner