Zero-wall clearance linkage mechanism for a high-leg seating unit

A seating unit, comprising:

• a first foot-support ottoman;
• a chassis that includes a pair of base plates in substantially parallel-spaced relation each having a lower edge, a forward portion and a rearward portion, and at least one crossbeam spanning the base plates and fixedly attached to the lower edge thereof;
• a pair of seat-mounting links in substantially parallel-spaced relation, wherein each of the seat-mounting links is disposed in an inclined orientation in relation to the chassis;
• a seating support surface extending between the seat-mounting links;
• a pair of generally mirror-image linkage mechanisms each interconnecting each of the base plates and a respective seat-mounting link, and adapted to move between a closed position, an extended position, and a reclined position, wherein each of the linkage mechanism comprises:
• a pair of ottoman assemblies that movably inter-couple a first foot-support ottoman to the seat-mounting links, and that extend said first foot-support ottoman forward of the chassis in said extended position;
• and
• a backrest that extends substantially upright from said seating support surface in said extended position;
• and
• a pair of roller systems adapted to translate the seat-mounting links over the base plates during adjustment between the closed position, the extended position and the reclined position while maintaining the inclined orientation relationship therebetween such that the seating support surface is biased at a particular inclination angle throughout adjustment.