Patent ID: 7040692

Claim:
A support mechanism for a rocker-recliner chair which comprises: a base assembly that includes a floor-contacting base and a cam member which can rock forwardly and rearwardly on the base; and a support assembly mounted on the base assembly which can be shifted between a retracted state, an intermediate-extended state and a fully-extended state, said support assembly including left and right linkage subassemblies, a stabilizer bar connected between said linkage subassemblies and a roller lock tube connected between said linkage subassemblies; each linkage subassembly including a rocker mounting link connected to the base assembly, a backrest mounting bracket for supporting a backrest of a chair, a main carrier link having a front leg and a rear leg pivotally connected to a front portion of the backrest mounting bracket, a back push link pivotally connected to a rear portion of the backrest mounting bracket, a roller lock tube mounting link pivotally connected at a first end to a rear end of the rocker mounting link, and a roller lock tube push link pivotally connected between the roller lock tube mounting link and the back push link; said roller lock tube being connected between second ends of the roller lock tube mounting links of the left and right linkage subassemblies, the roller lock tube being rotated downwardly onto the floor-contacting at a location beneath the backrest mounting bracket to provide support thereto and prevent rocking of said support assembly when the support assembly is shifted out of said retracted state, said roller lock tube preventing lateral wandering of rear ends of said subassemblies and reliable contact with the floor-contacting portion of the base assembly.