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
Apparatus and method of managing radio bearer in wireless communication system
Sitagliptin intermediate compounds, preparation methods and uses thereof
Trash receptacle
System, method, and computer readable medium for a force-based wheelchair joystick
Idle stop and go system and method for controlling thereof
AIN buffer N-polar GaN HEMT profile
Remote ignition system for a vehicle and method for securing a remote ignition function
  Randomly Featured Patents
Push-pull amplifier
Fenofibrate pharmaceutical composition having high bioavailability and method for preparing it
Internal combustion engine and method for operating an internal combustion engine by means of a laser ignition unit
Ceramic-metal junction structure and a method for manufacturing the same
Ear muffs having ear coverings representing phonograph records
Personal cooling device and method
Humidifier chamber
Phenol derivatives and method of use thereof
Self-closing gate
Granular pesticide composition