Futon. Sunday , April 15th , 2018 - 00:23:18 AM
In December 1991 Thomas L. Meade submitted a convertible furniture frame patent (Patent Number 5170519) that did not use arms in its design for assisting conversion of the futon but a hinges and stops arrangement. The seat and back sections incorporated pieces of lumber beneath them to act as supports. There were two of these used on each section that when laid down in a bed position would rest on these supports. The genius in this design was its ability to pivot on a set of nylon wheels located towards the lower back of the seat section supports. All one has to do was tilt the frame back on the wheels which would put the back rest on the floor and pull the seat section up to unlock it and lower it down into a bed position. This design was simple, functional and easy to operate without the need for arms on the ends of the frame to help in the futons conversion.
Another beneficial feature of futon frames is the front load operation. Often referred to as easy upright, automatic upright, and half a dozen other terms, this feature makes conversion from bed back to sofa a much easier task than in the past. Usually, the seat deck is used in some fashion to create a lever. When you push down on the seat, the back comes up saving your back. This can be especially advantageous to those who do not have a lot of upper body strength. Heavier mattresses can make this feature a desirable addition, but this system can put some adverse stress on your futon frame if it is not designed properly or if the system is too complex. Ask your dealer to explain in detail about these features when in doubt.
Stress supports are usually narrow boards that help to reinforce the slats from the underneath. Not only do they reinforce the slat, but for those companies whose stress supports fit in snuggly against the front and back framing boards--they have the added benefit of helping to keep the futon frame from skewing when it is converted from bed to sofa. Likewise, stress supports with three screws per support are better than those with only two.
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