Beds – Sofa bed – Reverting back
Reexamination Certificate
2000-03-29
2001-09-11
Grosz, Alexander (Department: 3628)
Beds
Sofa bed
Reverting back
C005S043000
Reexamination Certificate
active
06286159
ABSTRACT:
BACKGROUND OF THE INVENTION
1) Field of the Invention
The invention, an improved sofa bed structure, is to provide a firm sofa bed structure, which is a bed board as fully opened and is a sofa bed as folded. The bedstead can be fully opened or folded without difficulty. Especially, all the frame pipes of the bedstead are interlocked. Each bedstead can be disassembled as single tubular pipes to reduce the packing volume of the whole structure. It is not only advantageous to product packing or shopping but also reduce the cost for clearing export customs.
2) Description of the Prior Art
The invention, sofa bed structure, of prior of art primarily includes a fixed mattress and back support cushion. A transversally movable or foldable bed board is equipped at the location of seat cushion for a sofa bed, thus one can pull out or unfold a bed board to form a flat bed depending on practical spatial situation. One can also push or fold a bed board to conceal it for the use of a single sofa bed. However, for both of the methods in concealing a bed board by moving a bed board to the bottom of a seat cushion or folding bed board to the top of seat cushion, the majority of a sofa bed is still a structure comprising of a fixed base seat cushion and back support cushion. When it is fully opened, a back support cushion is not extendable as part of a bed board and eventually becomes a head board of a bed and not convenient in usage. Besides, the outlook of the whole product is in a shape of fixed sofa bed. It is huge in volume and not suitable for packing or shipping. It results unnecessary cost for clearing export customs due to greatly increased volume.
SUMMARY OF THE INVENTION
The invention, an improved sofa bed structure, comprising of a base frame, a back support frame and a rear back frame is sequentially assembled through pin connection as a bedstead structure. Each frame is equipped with a net. The whole bedstead is fastened by the fixture of a base frame and a fixed base. Besides, there are fixed foot bars with the same height of those on fixed base at the bottom edge of a rear back frame, which is far away from fixed base. At the location of back support frame near the connection of rear back frame, there are foldable folding foot bars. When a sofa bed is folded, back support frame and rear back frame are closely joined on one side of base frame to form a sofa bed structure. When the whole bed board is fully opened, back support frame and rear back frame are supported respectively on the basis of folded foot bars and fixed foot bars to make the whole bedstead become an integral structure and to extend base frame, back support frame, and rear back frame to form an integral sofa bed structure. The main objective of the invention is to increase area of usage for a bed board without becoming any usage obstacles.
Another objective of the invention of improved sofa bed structure is to fasten base frame onto a fixed base. There is certain crossing distance for fixed foot bars at rear back frame between the connection location for a base frame and back support frame and the lateral side of a fixed base. There is also a saddle located on the crossing position of fixed foot bars of a fixed base. When the whole bedstead structure is integrated as a sofa bed, the fixed foot bars of a rear back frame are firmly sit on the saddle of a fixed base to make rear back frame stand beside a fixed base. Also, due to the full contact of end frame edge of rear back frame and foot bars of a fixed base, transversal interlock effect is achieved to make the whole sofa bed much more firm.
Another objective of the invention of an improved sofa bed structure, is that all frame pipe of bedstead are connected by tubular interlocking structure. Each frame can be disassembled as individual pipe structure to reduce the volume of whole structure at packing for advantageous product packing and shipping and cost reduction for clearing export customs.
The followings are brief description for optimal embodiments of the invention for committee's better understanding in the structural assembly and operations of the invention.
REFERENCES:
patent: 5327591 (1994-07-01), Fireman et al.
patent: 2525094 (1983-10-01), None
patent: 785321 (1957-10-01), None
Giant Century Inc.
Grosz Alexander
Rosenberg , Klein & Lee
LandOfFree
Sofa bed structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sofa bed structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sofa bed structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2478421