Patent ID: 6877762

Claim:
A stroller comprising: a U-shaped handle having a horizontal part including a pivotal joint at a middle portion thereof; armrests pivotally joined to said U-shaped handle; front legs pivotally joined to said armrests, respectively; rear legs pivotally joined to said armrests, respectively; front wheels on lower end parts of said front legs, respectively; and rear wheels on lower end parts of said rear legs, respectively; wherein said front legs are set so as to extend obliquely away from each other toward said front wheels, and said rear legs are set so as to extend obliquely away from each other toward said rear wheels, and wherein each of said front wheels is supported by a corresponding one of said front legs via a swivel structure capable of turning relative to said each of said front wheels, such that when the stroller is unfolded and said horizontal part is bent at said pivotal joint, said front legs and rear legs are perpendicular to a ground surface, and said front wheels are also perpendicular to the ground surface via said swivel structures turning relative to said front wheels, respectively.