Chair or sofa convertible into a bed
AssigneeLukas Beddy di Luca Sebastiano & C.S.a.s.
InventorSebastiano Luca'
Life of this patent
Estimating the term…
Abstract
A mechanism for a chair or sofa which is convertible into a bed comprises a fixed frame to which is pivotally attached an articulated movable frame made up of three sub-frames a first of which is pivotally connected at one end to the fixed frame, a second of which is suspended within the fixed frame by links and levers attached to the first sub-frame, and the third of which is pivotally attached to the first sub-frame. When the mechanism is folded up for use as a chair or sofa the second sub-frame lies below the first and within the fixed frame. When the mechanism is opened out as a bed the first sub-frame is turned to a horizontal position and the second sub-frame is raised to the same horizontal level thereas by the linkages and lever systems from which it is suspended.
Claims4
In a mechanism for an armchair or couch convertible into a bed, of the type including
- a fixed support frame,
- an articulated movable frame,
- pivotal attachment means pivotally attaching said movable frame to said fixed support frame, said pivotal attachment means permitting said movable frame to rotate thereabout between a first end position above said fixed frame and a second end position to one side of said fixed frame, said mechanism being adapted for use as a chair or couch when said movable frame is in said first position and being adapted for use as a bed when said movable frame is in said second position,
- an upholstery seat and seat back for use when said mechanism is arranged as an armchair being attached to said movable frame on one face thereof, and
- a mattress for use when said mechanism is arranged for use as a bed being attached to said movable frame on the other face thereof,
- the improvement wherein said movable frame includes first and second sub-frames,
- main pivot means pivotally mounting said first sub-frame at one end thereof to said fixed frame,
- lever means suspending one end of said second sub-frame, at each side thereof, from said first sub-frame, and
- lever system means suspending the other end of said second sub-frame, at each side thereof, from said fixed frame by means of a crosspiece connected at opposite ends to said lever system means and which passes underneath said other end of said second frame means without being fixedly connected thereto, said lever system means being also connected to said first sub-frame whereby when said mechanism is in said position for use as a chair or couch said second sub-frame lies below said first sub-frame and when said first sub-frame is turned about said main pivot means connecting it to said fixed frame said lever means at said first end of said second sub-frame and said lever means at said other end of said second sub-frame operate to raise said second sub-frame to a position substantially level with the said first sub-frame and coplanar therewith.
In a mechanism for a armchair or couch convertible into a bed, of the type including
- a fixed support frame,
- an articulated movable frame,
- pivotal attachment means pivotally attaching said movable frame to said fixed support frame, said pivotal attachment means permitting said movable frame to rotate thereabout between a first end position above said fixed frame and a second end position to one side of said fixed frame, said mechanism being adapted for use as a chair or couch when said movable frame is in said first position and being adapted for use as a bed when said movable frame is in said second position,
- an upholstery seat and seat back for use when said mechanism is arranged as an armchair being attached to said movable frame on one face thereof, and
- a mattress for use when said mechanism is arranged for use as a bed being attached to said movable frame on the other face thereof,
- the improvement wherein said movable frame includes first and second sub-frames,
- main pivot means pivotally mounting said first sub-frame at one end thereof to said fixed frame,
- lever means suspending one end of said second sub-frame, at each side thereof, from said first sub-frame,
- lever system means suspending the other end of said second sub-frame, at each side thereof, from said fixed frame, said lever system means being also connected to said first sub-frame whereby when said mechanism is in said position for use as a chair or couch said second sub-frame lies below said first sub-frame and when said first sub-frame is turned about said main pivot means connecting it to said fixed frame said lever means at said first end of said second sub-frame and said lever means at said other end of said second sub-frame operate to raise said second sub-frame to a position substantially level with the said first sub-frame and coplanar therewith, and stiffening crosspieces for said first sub-frame and said second sub-frame, said stiffening crosspieces extending across the width of said mechanism and being pivotally connected to a respective sub-frame at the ends thereof, said stiffening cross-pieces each having a generally U-shape central portion arranged to extend downwardly, whereby to provide the required stiffening without constituting rigid beams across the width of said mechanism, when said mechanism is arranged for use as a bed.
Dependencies are inferred from the claim text.