recliner sofa mechanism: 1. The ottoman adopts the design of wide heavy gauge links and built-in articul ating elevated mid-ottoman.Profile shape designed for safety and appearance without pinch points. Articulating designs allows use of wider & higher mid -ottoman for elimination of entrapment areas and for leg support. 2. The system adopts the geometrically balanced design to balance chair operation.It is consistent and easy for operation by any person.The occupant is weight is used to balance operation. Meanwhile it controls the sitting position and reclining position. Springs here are only used for locking and the initial start of the opening. 3. The customer has several options as to how to activate the mechanism. There are cable style,outside handle style and inside handle style.Easy operation Customer can choose to use handle or lever activation to open the mechanism and the color of the handle or lever. Slight footrest pressure will allow closing the ottoman. 4. The system uses direct drive with double locks. The direct drive with double over-center locks enables maximum synchronization of side positive locking of both sides.Square drive tube connects to and controls both left and right sides. Ottoman is locked closed on both sides. 5. Minimum stack-up design. The adoption of the flatter links and wider base mounting points enables greater bending resistance and greater stability and strength.It improves weight capacity and durability. The mechanism base width is closer to seat width while maintaining sufficient clearance between links to eliminate possibility of interference 6. Flanged links for stabilizer tubes.Set up the maximum strength stability and is side to side. It eliminates problems with flexing and breaking of tubes end at bend.Flange is on heavy gauge link instead of the lighter gauge tube which can flex and break. 7. Large diameter cross tubes are used instead of formed straps makes the system obtaining the maximum strength, side to side stability and torque control. Unique design of flattened tube end maximizes torsional strength unlike non-tubular cross members which have no significant torsional strength. 8. The system uses the extended life rivet joints design. All rivet joints have either acetal or bronze rivet bushing and acetal spacers to eliminate any steel to steel contact. No metal to metal noises when links contact nylon stop pins. 9. Interchangeable on wood frame design. The wood frames designed for the rocker recliner, motorized lift are all interchangeable. 10. The back of the chair adopts the KD sleeve design for easy packaging and installation.