Adjustable Bed Base with Control Box to Limit Movement

Abstract

An adjustable bed base has a stationary frame and a stationary seat platform raised above the stationary frame via a riser. An articulating platform includes three platforms, head and foot platforms being hinged to the stationary seat platform. Front and rear linear actuators articulate the deck such that the head and foot platforms decline relative to the stationary seat platform when the linear actuators are retracted. The head and foot platforms may be inclined when the linear actuators are extended. In some configurations, all three platforms may be co-planar. The raised seat platform of the articulated platform facilitates those who sleep face down.

What is claimed is: 
     
         1 . An adjustable bed base comprising:
 a generally rectangular stationary frame having opposed side rails, a head rail, and a foot rail;   a riser secured to the stationary frame,   an articulating platform comprising a head platform section, a seat platform section and a foot platform section hinged together, the seat platform section being secured to the riser such that the seat platform section is stationary above the stationary frame;   a front linear actuator for inclining and declining the head platform section;   a rear linear actuator for inclining and declining the foot platform section; and   a control system which restricts movement of at least one the linear actuators.   
     
     
         2 . The adjustable bed base of  claim 1 , further comprising a front pusher assembly for inclining the head platform section, the front pusher assembly comprising two arms, a wheel attached to an end of each of the arms, each of the arms being pivotally secured to one of the side rails of the stationary frame, the front pusher assembly further comprising a lower stabilizer extending between the arms, an upper stabilizer extending between the arms, the front linear actuator having a first end pivotally secured to a mounting bracket secured to the lower stabilizer of the front pusher assembly and a second end pivotally secured to a mounting bracket secured to the head rail of the stationary frame; 
     
     
         3 . The adjustable bed base of  claim 1 , further comprising a rear pusher assembly for inclining the foot platform section, the rear pusher assembly comprising two links, each of the links being pivotally secured to one of the side rails of the stationary frame, the front pusher assembly further comprising a lower stabilizer extending between the links, an upper stabilizer extending between the links, the rear linear actuator having a first end pivotally secured to a mounting bracket secured to the lower stabilizer of the rear pusher assembly and a second end pivotally secured to a mounting bracket secured to the foot rail of the stationary frame. 
     
     
         4 . The adjustable bed base of  claim 1 , wherein the control system prevents an operator from moving the adjustable bed base as follows: raising the foot platform section while the head platform section is anywhere between horizontal and negative five degrees; lowering the head platform section below negative five degrees when the foot platform section is horizontal; lowering the head platform section below horizontal when the foot platform section is at any positive angle; raising the foot platform section when the head and foot platform sections are below negative five degrees. 
     
     
         5 . The adjustable bed base of  claim 1 , wherein an alarm indicates when the operator tries to move the adjustable bed base to one of the following positions: the foot platform section is raised while the head platform section is anywhere between horizontal and negative five degrees; the head platform section is lowered below negative five degrees when the foot platform section is horizontal; the head platform section is lowered below horizontal when the foot platform section is at any positive angle; the foot platform section is raised when the head and foot platform sections are below negative five degrees. 
     
     
         6 . The adjustable bed base of  claim 1 , wherein the control system prevents the head section platform from declining from a horizontal position when the foot platform section is in a horizontal position. 
     
     
         7 . The adjustable bed base of  claim 1 , wherein the head and foot platform sections are inclined when the front and rear linear actuators are extended from a home position. 
     
     
         8 . The adjustable bed base of  claim 1 , wherein the head and foot platform sections are declined when the front and rear linear actuators are retracted from a home position. 
     
     
         9 . An adjustable bed base comprising:
 a stationary frame having opposed side rails, a head rail, and a foot rail;   a riser secured to the stationary frame,   an articulating platform comprising a stationary seat platform section secured to the riser, a head platform section hinged to one side of the stationary seat platform section and a foot platform section hinged to the opposite side of the stationary seat platform section;   a front motorized linear actuator for inclining and declining the head platform section, wherein the head platform section is inclined when the front motorized linear actuator is extended and declined when the front motorized linear actuator is retracted;   a rear motorized linear actuator for inclining and declining the foot platform section, wherein the foot platform section is inclined when the rear motorized linear actuator is extended and declined when the rear motorized linear actuator is retracted; and   a control system which restricts movement of at least one the motorized linear actuators.   
     
     
         10 . The adjustable bed base of  claim 9 , further comprising a front pusher assembly for inclining the head platform section, the front pusher assembly comprising two arms, a wheel attached to a first end of each of the arms, a second end of each of the arms being pivotally secured to one of the side rails of the stationary frame, the front pusher assembly further comprising a lower stabilizer extending between the arms, an upper stabilizer extending between the arms, the front motorized linear actuator having a first end pivotally secured to a mounting bracket secured to the lower stabilizer of the front pusher assembly and a second end pivotally secured to a mounting bracket secured to the head rail of the stationary frame. 
     
     
         11 . The adjustable bed base of  claim 9 , further comprising a rear pusher assembly for inclining the foot platform section, the rear pusher assembly comprising two links, each of the links having a first end to which a wheel is attached and a second end pivotally secured to one of the side rails of the stationary frame, the front pusher assembly further comprising a lower stabilizer extending between the links, an upper stabilizer extending between the links, the rear motorized linear actuator having a first end pivotally secured to a mounting bracket secured to the lower stabilizer of the rear pusher assembly and a second end pivotally secured to a mounting bracket secured to the foot rail of the stationary frame. 
     
     
         12 . The adjustable bed base of  claim 11 , wherein the wheels of the front pusher assembly move along the head platform section when the head platform section is pivoted about a head axis. 
     
     
         13 . The adjustable bed base of  claim 9 , wherein the wheels of the rear pusher assembly move along the foot platform section when the foot platform section is pivoted about a foot axis. 
     
     
         14 . The adjustable bed base of  claim 9 , wherein the control system prevents the head section platform from declining from a horizontal position when the foot platform section is in a horizontal position. 
     
     
         15 . The adjustable bed base of  claim 9 , wherein the control system allows the head section platform to decline more than five degrees from a horizontal position only if the foot platform section is declined first and the head section platform does not decline more than the foot platform section. 
     
     
         16 . An adjustable bed base comprising:
 a stationary frame having opposed side rails, a head rail, and a foot rail;   a riser secured to the side rails of the stationary frame,   a stationary seat platform section secured to the riser, a head platform section hinged to one side of the stationary seat platform section and a foot platform section hinged to the opposite side of the stationary seat platform section;   a front motorized linear actuator for inclining and declining the head platform section, wherein the head platform section is inclined when the front motorized linear actuator is extended and declined when the front motorized linear actuator is retracted;   a rear motorized linear actuator for inclining and declining the foot platform section, wherein the foot platform section is inclined when the rear motorized linear actuator is extended and declined when the rear motorized linear actuator is retracted; and   a control system which restricts movement of at least one the motorized linear actuators to prevent the head platform section from declining from a horizontal position when the foot platform section is in a horizontal position.   
     
     
         17 . The adjustable bed base of  claim 16 , further comprising a front pusher assembly for moving the head platform section, the front pusher assembly comprising two arms, each arm having a first end to which a wheel is attached and a second end, the second end of each of the arms being pivotally secured to the stationary frame, the front pusher assembly further comprising a lower stabilizer extending between the arms, the front motorized linear actuator having a first end pivotally secured to a mounting bracket secured to the lower stabilizer of the front pusher assembly and a second end pivotally secured to a mounting bracket secured to the head rail of the stationary frame. 
     
     
         18 . The adjustable bed base of  claim 16 , further comprising a rear pusher assembly for moving the foot platform section, the rear pusher assembly comprising two links, each of the links having a first end to which a wheel is attached and a second end, the second end of each of the links being pivotally secured to one of the side rails of the stationary frame, the front pusher assembly further comprising a lower stabilizer extending between the links, the rear motorized linear actuator having a first end pivotally secured to a mounting bracket secured to the lower stabilizer of the rear pusher assembly and a second end pivotally secured to a mounting bracket secured to the foot rail of the stationary frame. 
     
     
         19 . The adjustable bed base of  claim 17 , wherein the wheels of the front pusher assembly move along the head platform section when the head platform section is pivoted about a head axis by the front motorized linear actuator. 
     
     
         20 . The adjustable bed base of  claim 18 , wherein the wheels of the rear pusher assembly move along the foot platform section when the foot platform section is pivoted about a foot axis by the rear motorized linear actuator.