Patent ID: 6691348
Filing Date: 2004-02-17
Classification: A61G

Abstract:
Bed with adjustable positions, comprising, in combinationa head unit; a foot unit; and a central unit supported at one end by said head unit and at the other end by said foot unit; said head unit including a lower structure; and an upper structure; means for vertically guided sliding of said upper structure with respect to said lower structure, said means for vertically guided sliding of said upper structure with respect to said lower structure being connected to said upper and lower structures; first linear type actuating means for elevating or lowering said upper structure with respect to said lower structure, said first linear type actuating means being attached to said upper and lower structures; means for rotating said central unit incorporating a rocker plate disposed and able to pivot in an interior of said upper structure; and second linear type actuating means for pivoting said rocker plate with respect to said upper structure; a double-flanged adapter attached to a side of said rocker plate which is directed toward said central unit; a pair of inclination subassemblies, used during rotation of said bed, comprising a link connected at its lower end to a lower beam of said upper structure by a pin which extends toward said central unit; an attachment bracket connected to an upper end of said link; due to said pin which extends beyond said upper structure, said link can be moved in a vertical plane which is parallel and outside of said upper structure; said foot unit having essentially the same structure as said head unit; said central unit including a central platen to which a pair of side platens is hinged; means for connecting transversal margins of said central platen to said rocker plate; means for connecting short margins of each said side platens to said attachment brackets; a pneumatic bag subassembly comprising an upper section and a lower section; each of said upper and lower sections being independently inflatable, said upper and lower sections being slightly narrower than a combined width of said central and side platens; a reaction board disposed on said upper section and having a width slightly narrower than said central platen and a length substantially equal to said upper section, said reaction board having an edge hinged to a center of said central platen; a pneumatic actuating subassembly secured beneath said central platen, said pneumatic actuating subassembly comprising an air blower connected to a feed valve connected at said air blower; a first valve actuator connected at each end of said feed valve; one of said first valve actuator opening an air supply to said upper section, another first valve actuator opening an air supply to said lower section; a pair of dump valves; one dump valve for said upper section, another dump valve for said lower section of said pneumatic bag subassembly; and a pair of second valve actuators for said pair of dump valves; an articulated mattress placed on said pneumatic bag subassembly, said articulated mattress including a central segment having a pair of longitudinal sides, to each of which is attached a lateral segment; and a pair of side rail assemblies, each of which being pivotally mounted to one of said exterior long margin of said side platen.