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Class Information
Number: 5/685
Name: Beds > Waterbed or associated device > Having plural, distinct removable bladders
Description: Waterbeds or associated devices comprising at least two individual liquid enclosing structures that together define a supporting surface for a user, with at least one of the structures replaceable.










Patents under this class:

Patent Number Title Of Patent Date Issued
6857152 Water bed structure Feb. 22, 2005
6691355 Mattress means as synergetically effected by dual-fluid fluidizing units Feb. 17, 2004
6481033 Multiple module mattress system with depressions accomodating inserts of differing firmness Nov. 19, 2002
6343393 Waterbed structure Feb. 5, 2002
6192538 Modular mattress system with a removable liquid filled insert Feb. 27, 2001
6065167 Fluid-filled flexible-walled chambers having improved resiliency, and methods for controlling their response characteristics May. 23, 2000
5845353 Water bed with internal air filled tubes Dec. 8, 1998
5839788 Article of furniture with an improved inner support system Nov. 24, 1998
5802739 Complex-contoured tensile bladder and method of making same Sep. 8, 1998
5794287 Water bag of a water bed Aug. 18, 1998
5740573 Air bed with circumferential belt Apr. 21, 1998
5737788 Attaching arrangement in a multi-layered pad Apr. 14, 1998
5727269 Water bed with internal air bag(s) Mar. 17, 1998
5647077 Water mattress apparatus and a water bag used for the water mattress apparatus Jul. 15, 1997
5617596 Tube for a waterbed Apr. 8, 1997
5594962 Fluid filled medical mattress Jan. 21, 1997
5511260 Anti-decubitus mattress pad Apr. 30, 1996
5507048 Lightweight floatation waterbed Apr. 16, 1996
5311623 Hydropneumatic mattress May. 17, 1994
5285541 Flotation system including improved cushioning and support features Feb. 15, 1994
5259079 Double bed arrangement with combination mattress Nov. 9, 1993
5255404 Anti-decubitus mattress pad Oct. 26, 1993
5201780 Anti-decubitus mattress pad Apr. 13, 1993
5182825 Waterbed Feb. 2, 1993
5144707 Flotation system including improved locking features Sep. 8, 1992
5077848 Wave dampened watermattress with tubes and lumbar support Jan. 7, 1992
5005238 Water bed mattress Apr. 9, 1991
4970743 Mattress and foundation system useable with water mattresses Nov. 20, 1990
4932721 Water couch Jun. 12, 1990
4912789 Waterbed mattress Apr. 3, 1990
4858263 Cellular waterbed component and bed containing same Aug. 22, 1989
4788730 Gel-filled, variably-adjustable cushioning system for supporting a person Dec. 6, 1988
4745648 Body supporting structure May. 24, 1988
4737998 Cellular waterbed mattress assembly Apr. 19, 1988
4619007 Cellular waterbed component and method of manufacture Oct. 28, 1986
4597120 Waterbed utilizing dual fluid-filled mattresses and having improved surface continuity Jul. 1, 1986
4521929 Heated waterbed Jun. 11, 1985
4517692 Anti-decubitus waterfloatation system May. 21, 1985
4459714 Multi-function cushion and its assemblies Jul. 17, 1984
4346489 Foldable waterbed Aug. 31, 1982
4281425 Neonatal flotation pad Aug. 4, 1981
4221013 Fluid flotation sleep system Sep. 9, 1980











 
 
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