Resources Contact Us Home
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
Processing abstract derived entities defined in a data abstraction model
Method for facilitating assessment of a coursework answer and moderating the assessment
Method for building taxonomy of topics and categorizing videos
Treatment of diabetes with milk protein hydrolysate
Multi-radio coexistence
Home appreciation participation notes
  Randomly Featured Patents
Child's novelty bank
Intubation instrument
Thin-film resistor and process for producing the same
Pay for use and anti counterfeit system and method for ink cartridges and other consumables
Lubricating oil compositions
Assembly for mounting to a recessed stud
Belt tensioner
Process for concentrating halogenoanthraquinones
Partitioning of contended synchronization objects
Load driving circuit and multi-load feedback circuit