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Class Information
Number: 5/677
Name: Beds > Waterbed or associated device > With stretchable bladder wall
Description: Waterbeds or associated devices in which the surface area of a wall or walls of the structure can increase in size upon a user being positioned on the wall and, upon the user withdrawal, the wall or walls retract to their original size.

Patents under this class:

Patent Number Title Of Patent Date Issued
6923836 Preparation of dyed plastics or polymeric dye particles Aug. 2, 2005
5680662 Cushioning mattress for reducing shear and friction Oct. 28, 1997
5255404 Anti-decubitus mattress pad Oct. 26, 1993
5228156 Fluid operated device Jul. 20, 1993
5210892 Sculptured, stretchable waterbed mattress with aesthetic appearance May. 18, 1993
5195196 Sculptured, stretchable waterbed mattress with aesthetic appearance Mar. 23, 1993
5175898 Sculptured, stretchable waterbed mattress with aesthetic appearance Jan. 5, 1993
4583254 Low tension waterbed mattress with aesthetic appearance Apr. 22, 1986

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