Futon. Thursday , February 22nd , 2018 - 06:11:38 AM
One of the earliest futon patents I was able to locate was for Nikita Grigoriev who filed for a futon patent in 1983 (Patent Number 4538308) for what he called \"Convertible Furniture\". The drawings represent what we today would call a tri-fold frame which uses 3 flat sections that make up the seating and sleeping portions of the frame and work in conjunction with each other to go from sofa to bed. I found it interesting how he described the operation of a futon as a piece of furniture which is convertible from a bed to a sofa which utilizes the geometry of its component parts to facilitate conversion from one mode (sofa) to another mode (bed). I think this abstract statement by Mr. Grigoriev does very well in explaining the nature of futon furniture and how they function.
Another early futon design patent was filed in 1985 (Patent Number 4642823) assigned to Robert Fireman's Furniture Gallery, Inc. invented by William B. Wiggins. What was interesting about this early take on futon design was the incorporation of arms on the sides of the futon which allowed the seat and back sections to integrate into the arms and allow for operation without having to rearrange the futon. This early design featured two pivoting swing pieces attached from the back rails into the back section. The seat and back sections were connected together using steel pins. What I found most interesting about this design is that it effectively converted the futon from sofa to bed from the front. Once in the bed position additional legs were extended down for support. Additionally a dowel and rod interlocked with the seat and back section to safely lock the two in a horizontal position. This design would be considered a bi-fold by today's standards which means that 2 sections are used to create the seating and sleeping portions of the frame itself.
Futon frames that have slats that are 2.5\" wide should have at least twelve slats on the seat and twelve on the back for a total of 24 slats. Futons with 1.75\" slats should have at least 15 slats on the seat and 15 slats on the back for a total of 30 slats. If the slats are any thinner or if the respective futon you are considering has less slats than indicated here, you might want to ask why.
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