US Patent 7793909 Canvas bridge

The canvas bridge is an easel accessory made of any material which is sturdy, durable and still retains some flexibility. It can be made of materials with a wide variety of properties. The design fits all easels. It is a long rectangular piece of material with a variety of lengths. Each end is elongated on the bottom side, creating the visual image of a bridge, from which a sharpened metal nail, or nail-like material extending approximately ¼ inch which is pushed into the canvas stretcher bars (stretcher bars are the wooden frame upon which the canvas is stretched).