Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Bed having user variable degree of hardness










Image Number 3 for United States Patent #5504952.

A bed including a base, a mattress overlying the base and apparatus for varying the hardness of the bed to take into account the changing personal circumstances of the user, for example, aging, gaining weight etc. and to compensate for the wear and tear on the mattress. The base includes a generally rectangular frame and a plurality of crosspieces traversing thereacross such that the hardness of the bed is varied by varying the number of crosspieces. The mattress includes a filling in which its hardness is varied by varying the amount of the filling, its components or adjusting the packing density of a composite filling having a foam substrate with a plurality of substantially incompressible marble-size balls embedded therein.








 
 
  Recently Added Patents
Touch-sensitive device and communication device
Atmospheric treater with roller confined discharge chamber
LED package with top and bottom electrodes
Use of Lactobacillus for liver protection
Calcium carbonate granulation
Compact bus bar assembly, switching device and power distribution system
Location estimation of wireless terminals through pattern matching of deduced signal strengths
  Randomly Featured Patents
Fast hardening aqueous coating composition and paint
Method of storing data in blocks per operation
Method and apparatus for control of base stations in macro diversity radio systems
Integrated solar energy receiver-storage unit
Intelligent agents for electronic commerce
Fluid delivery system with a jet pump booster and means to maintain a constant rate of flow through the jet nozzle
Decoding of an encoded wideband digital audio signal in a transmission system for transmitting and receiving such signal
User interface for creating viewing and temporally positioning annotations for media content
Card connector
Food container/holder