• Introduction
• Assembly Instructions

• Mattresses
• Choosing a Mattress
• Cotton
• Foam

• Frames
• Frame History
• Mechanisms
• Wood

• Covers

In-Depth Primer ~ 

Mechanisms (Patents)

Page 1 - Page 2 - Mechanism Patents - Essays

Following is some information on three patented design ideas being used in the industry today. As stated above, most frame manufacturers and importers use some variation of the slider mechanism in their frame construction. Others have attempted to break new ground.

Otis Bed Manufacturing has recently applied for a patent for what is called the Stuart Mechanism. This mechanism utilizes an electric motor and gear box to automatically convert from bed to sofa and back again.

Spectrum's Jack Knife Mechanism allows the seat to remain interlocked and balanced as the frame converts from bed to sofa and back again.

August Lotz’ Barton Mechanism utilizes a simple notch and pawl to engage the seat and back when converting. The pawl, a free hanging lever, engages with a notched step allowing easy conversion from bed to sofa.

Futon Life requested patent information from over twenty companies. Only the three listed above responded, and we thank them for their contribution. Other companies responded with mechanism information but only the patents are featured here. We also thank these companies for their candor as well.- Editor