Patent ID: 7100775

Claim:
A binder for a suspension file comprising a body having a top surface, a cavity, two end surfaces, two hook slots defined respectively on the end surfaces near the top surface of the body, an inner surface, a control slot defined in the top surface of the body, multiple guides formed on the inner surface of the cavity and aligned with each other to form a sliding path, and multiple female cover connectors formed on the inner surface of the inner cavity, a cover mounted on the body to close the cavity and having an inner surface, an outer surface, a top edge, a bottom edge, and multiple connector posts formed on the inner surface of the cover and face and correspond respectively to the female cover connectors, a control element mounted in the cavity in the body and having a straight rod slidably mounted inside the sliding path and having a top surface, a neck securely formed on the top surface of the straight rod and extending out the control slot in the body, a controller securely attached to the neck outside the control slot of the body, an inner end, an outer end, a hook formed on the outer end of the straight rod, and an upper rack gear formed on the inner end of the straight rod, a Z-shaped rod slidably mounted inside the sliding path and having an inner end, an outer end, a hook formed on the outer end, and a lower rack gear formed on the inner end of the Z-shaped rod, and a pinion gear mounted rotatably on the inner surface of the cavity of the body and engages the upper rack gear and the lower rack gear.