US Patent 11259984 Reciprocating rollator

A rollator having a first side frame and a second side frame; the first side frame comprising a first side frame intervening structural portion; the second rolling side frame comprising a second side frame intervening structural portion; a central platform having a first platform side and a second platform side; and first and second track mechanisms respectively coupling the first and second side portions to the first and second platform sides of the central platform; the first and second track mechanisms permitting independent movement of said first and second side frames relative to said central platform.