Coordinative Control Method For Adjusting The Back and Knee Bottom Sections Of An Adjustable Bed, And Computer Program For Implementing Same

A bottom adjusting action control system for adjusting bottom sections of a bed comprising a rotatable back bottom section and a rotatable knee bottom section, said control system adjusting bottom sections of the bed according to a preset action pattern, said control system comprising:

• (a) a bottom adjusting controller comprising:
• (i) a controller means which is in communication with and functions when back and knee bottom sections are both horizontal to activate and start a knee lifting drive means, said knee lifting drive means being attached to a back side of the knee bottom section for lifting and/or lowering the knee bottom section, and after an amount of time has elapsed corresponding to a first preset time value stored in a computer storage means having an internal clock, the controller means then activates lifting of a back lifting drive means, which abuts a back side of the back bottom section, and continues activation of the back lifting drive means until the back bottom section is elevated to a preset angle, at which time activation of the knee lifting drive means stops, whereby to elevate the knee bottom section to an inclination angle corresponding to a second time value or inclination angle preset and stored in said computer storage means;
• (ii) a user control means in communication with said controller means, said user control means facilitating adjustment and resetting of a coordinate action pattern of both the back and knee bottom sections to suit an individual user, said user control means having a first change means for adjustment of the first preset value, defined as a difference in time between start of activation of the knee lifting drive means and start of activation of the back lifting drive means, and a second change means for adjustment of the second preset value, defined as an inclination angle corresponding to a most inclined state of the knee bottom section;
• said computer storage means being in communication with said user controller means, said computer storage means having a first storage area for storing the first preset value corresponding to the preset time difference changeable by the first change means, and a second storage area for storing the second preset value defined as the inclination angle corresponding to the most inclined state of the knee bottom section which is changeable by the second change means;
• (b) a back lifting link in communication with said user controller means, and movably connected to said back lifting drive means for lifting the back bottom section;
• and
• (c) a knee lifting link in communication with said user controller means, and movably connected to said knee lifting drive means for lifting the knee bottom section, wherein one or more action patterns can be adjusted and reset by a user in the computer storage means, so as to provide a preset coordinative action pattern for lifting and/or lowering of the back and knee bottom sections to minimize/avoid sliding of a user in the bed when the back bottom section is lifted, and to also minimize exertion of abdominal pressure on the user by limiting inclination of the back and knee bottom sections, such that an angle between the back and knee bottom sections does not become smaller than a preset angle during operation of the preset coordinative action pattern.