Resources Contact Us Home
Bed having user variable degree of hardness

Image Number 2 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
Preserving privacy of digital communication information
Sensor system
Method and apparatus for band switching in wireless local access network
Normalized contextual performance metric for the assessment of fatigue-related incidents
Methods and systems for determining the reliability of transaction
RF/optical shared aperture for high availability wideband communication RF/FSO links
Multi-state DC-DC converter having undirectional switches
  Randomly Featured Patents
Combined disc player and radio receiver
Method and system for selective alkaline defiberization and delignification
Methods and apparatus for recovering from a failed network interface card
Disk driving unit
Sedum plant named `Bon Bon`
Angular offset method for fabricating a registration guide
Minimization of spacecraft attitude error due to wheel speed reversal
Method of fabricating lateral double diffused MOS (LDMOS) transistors
Positive resist composition
One-piece dispensing structure and method and apparatus for making same