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
Viewing stand
Tablet computer
Voltage regulator with improved voltage regulator response and reduced voltage drop
Latch-up free ESD protection
Compositions and methods for concentrating and depleting microorganisms
Rain barrel
Method and apparatus for analysis of histopathology images and its application to cancer diagnosis and grading
  Randomly Featured Patents
Transmission and latch circuit for logic signal
Liquid crystal display device and manufacturing method therefor
Method and apparatus of indicating steps in a task which have been completed
Image processing apparatus for correcting color space coordinates and method
Catalytic oligomerization
Method and device for testing a semiconductor serial access memory device through a main memory
Pushbutton actuator
Security features for portable computing environment
Laminated composite reinforcing bar and method of manufacture
Sequential-pulse, multiple pathway defibrillation method