A support surface assembly comprising four corner elements; at least four elongated rigid frame sections; a first air permeable layer suspended between the at least four elongated rigid frame sections; and a second air permeable layer suspended between the at least four elongated rigid frame section
A support surface assembly comprising four corner elements; at least four elongated rigid frame sections; a first air permeable layer suspended between the at least four elongated rigid frame sections; and a second air permeable layer suspended between the at least four elongated rigid frame sections; wherein the four corner elements include at least one lock element, the lock element having a first position that engages at least one elongated frame section and prevents relative movement between the four elongated rigid frame sections; the lock element having a second position that permits relative movement between the four elongated rigid frame sections.
대표청구항▼
1. A support surface assembly comprising: four corner elements;at least four elongated rigid frame sections;a first air permeable layer suspended between the at least four elongated rigid frame sections and defining an upper side of the support surface assembly for supporting a child when the suppor
1. A support surface assembly comprising: four corner elements;at least four elongated rigid frame sections;a first air permeable layer suspended between the at least four elongated rigid frame sections and defining an upper side of the support surface assembly for supporting a child when the support surface assembly is in a first orientation; anda second air permeable layer suspended between the at least four elongated rigid frame sections in spaced apart relationship from the first air permeable layer and defining a lower side of the support surface assembly for supporting a child when the support surface assembly is in a second orientation, the lower side facing opposite the upper side;wherein the four corner elements include at least one lock element, the lock element having a first position that engages at least one elongated frame section and prevents relative movement between the four elongated rigid frame sections; the lock element having a second position that permits relative movement between the four elongated rigid frame sections. 2. The support surface assembly of claim 1, wherein the first air permeable layer has a first stiffness and the second air permeable layer has a second stiffness. 3. The support surface assembly of claim 1, further including an inner space defined by the elongated rigid frame sections and located between the first air permeable layer and second air permeable layer, the inner space being devoid of material that provides support to either of the first or second air permeable layers. 4. A ventilated mattress, comprising: a frame, comprising a first frame bar having a first end coupled to a first hinge plate, a second end coupled to a second hinge plate, and a rigid body extending from the first ends to the second end,a second frame bar having a first end coupled to a third hinge plate, a second end coupled to a fourth hinge plate, and a rigid body extending from the first end to the second end,a first folding arm having a first end coupled to a first hinge connected to the first hinge plate and a second end coupled to a first folding arm hinge,a second folding arm having a first end coupled to a second hinge connected to the third hinge plate and a second end coupled to the first folding arm hinge; anda cover formed of air permeable material and configured to fit over the frame;wherein the first hinge, the second hinge and the first folding arm hinge permit the first folding arm and the second folding arm to pivot from an expanded position toward a center of the frame into a collapsed position. 5. The ventilated mattress of claim 4, wherein the frame further comprises: a third folding arm having a first end coupled to a third hinge connected to the second hinge plate and a second end coupled to a second folding arm hinge; anda fourth folding arm having a first end coupled to a fourth hinge connected to the fourth hinge plate and a second end coupled to the second folding arm hinge;wherein the third hinge, the fourth hinge and the second folding arm hinge permit the third folding arm and the fourth folding arm to pivot from an expanded position toward the center of the frame into a collapsed position. 6. The ventilated mattress of claim 4, wherein the first folding arm and the second folding arm are substantially axially aligned when in the expanded position and are substantially parallel to each other when in the collapsed position. 7. The ventilated mattress of claim 4, wherein the cover includes a first layer and a second layer connected to the first layer by an enclosure mechanism. 8. The ventilated mattress of claim 7, wherein the first layer forms a first sleeping surface and the second layer forms a second sleeping surface, the first sleeping surface having a firmness that is greater than a firmness of the second sleeping surface. 9. The ventilated mattress of claim 7, wherein the first layer has an elasticity that is greater than an elasticity of the second layer. 10. The ventilated mattress of claim 4, wherein the frame further comprises a third frame bar coupled between the first hinge plate and the second hinge plate in parallel relationship with the first frame bar, the first frame bar and the third frame bar defining a first ventilation opening along a length of the mattress to permit air to flow through the mattress. 11. The ventilated mattress of claim 10, wherein the frame further comprises a fourth frame bar coupled between the third hinge plate and the fourth hinge plate in parallel relationship with the second frame bar, the second frame bar and the fourth frame bar defining a second ventilation opening along the length of the mattress to permit air to flow through the mattress. 12. The ventilated mattress of claim 4, wherein the first hinge plate comprises a protrusion and the first end of the first frame bar comprises a track sized to receive the protrusion to couple the first frame bar to the first hinge plate. 13. The ventilated mattress of claim 12, wherein the cover includes a protrusion along an edge of the cover, the cover protrusion being configured to slide within the track of the first frame bar to attach the cover to the first frame bar. 14. The ventilated mattress of claim 4, wherein the first folding arm contacts the second folding arm when the folding arms are in the collapsed position. 15. The ventilated mattress of claim 4, wherein the first hinge comprises a mechanism that locks the first folding arm and the second folding arm in the expanded position, the mechanism being movable to an actuated position to unlock the first folding arm and the second folding arm to permit movement into the collapsed position. 16. A mattress, comprising: a pair of longitudinal bars;a pair of width bars;a pair of hinges coupling one of the longitudinal bars to the pair of width bars;a pair of hinge mechanisms coupling the other of the longitudinal bars to the pair of width bars; anda cover configured to fit over the longitudinal bars and the width bars;wherein the hinge mechanisms comprise a fixed member and a pivoting lock member joined by a hinge rod, the fixed member being immovably connected to the other of the longitudinal bars. 17. A mattress, comprising: a pair of longitudinal bars;a pair of width bars;a pair of hinges coupling one of the longitudinal bars to the pair of width bars;a pair of hinge mechanisms coupling the other of the longitudinal bars to the pair of width bars; anda cover configured to fit over the longitudinal bars and the width bars;wherein the hinge mechanisms comprise a fixed hinge member and a pivoting lock member joined by a hinge rod, the fixed hinge member being connected to the other of the longitudinal bars; andwherein the pivoting lock member comprises a lock housing, a lock and a detent receiver, the lock housing being sized to fit between the pair of width bars. 18. The mattress of claim 17, wherein one end of the lock housing comprises hinge detents which are received in hinge holes defined in the pair of width bars and provide for hinged movement of the pivoting lock member relative to the pair of width bars. 19. The mattress of claim 17, wherein the lock housing further comprises a lock aperture that receives the lock. 20. The mattress of claim 17, wherein the lock includes a release, a mechanism and detents, the mechanism being biased to a locked position in which the detents extend our of the lock housing. 21. The mattress of claim 20, wherein actuation of the release causes the detents to retract from the lock housing. 22. The mattress of claim 20, wherein the detents are biased to a position wherein the detents extend out of the lock housing. 23. The mattress of claim 20, wherein when the release is actuated, the width bars are moveable to a collapsed position.
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