Mechanical extending linkage and seating unit comprising the same

A mechanical extending linkage configured to be mounted in a seating unit which is movable between a retracted position and an extended position and comprises a seat, a backrest, and extendable primary and secondary footrests;

• wherein,
• the mechanical extending linkage comprises a footrest assembly for extending and retracting the primary and secondary footrests, the footrest assembly comprising a primary footrest link, a secondary footrest link and an intermediate link set;
• the intermediate link set comprises a first intermediate link, a second intermediate link, a third intermediate link and a fourth intermediate link;
• the seat is supported by a seat mounting plate to which the secondary footrest link is coupled via sequentially the first intermediate link and the third intermediate link, and to which the primary footrest link is coupled via sequentially the second intermediate link and the fourth intermediate link, and
• the footrest assembly is configured in such a manner that when the seating unit is in the retracted position, the secondary footrest link, the first intermediate link and the second intermediate link are arranged substantially parallel with the seat,
• wherein one end of the secondary footrest link is pivotally connected to one end of the first intermediate link, so that when the seating unit is in the retracted position, the secondary footrest link is arranged to substantially overlap with the first intermediate link.