Patent ID: 7168728

Claim:
A foldable stroller comprising: a handle having (i) a middle part having projections and having a longitudinal axis, and (ii) two side pipes connected to opposite ends of said middle part so as to be turnable about axes perpendicular to said axis of said middle part, respectively; and a folding part operating mechanism, incorporated into said handle, for turning said two side pipes about said axes, respectively, said folding part operating mechanism having tubular structures which (i) are interposed between said side pipes and said middle part, respectively, (ii) extend along said axes about which said two side pipes are turnable, respectively, and (iii) have helical guide grooves in their inner surfaces, respectively; wherein said middle part is slidable relative to said tubular structures along said axes, and wherein said projections are engaged with said helical guide grooves, respectively, such that said projections slide along said helical guide grooves, respectively, when said middle part is slid relative to said tubular structures, so as to turn said side pipes together with said tubular structures about said axes.