Standing baby stroller

A stroller seat for attachment to a stroller frame, comprising:

• a basket for supporting a child and having a confinement ring for confining the child;
• a seat ring comprising upper and lower connected concentric arcs having different radii supported in upper and lower tracks on the basket, the seat ring being rotatable in the track from a center-forward position;
• a seat back supported on the lower arc, the seat back being reclinable at least when the seat ring is in the center-forward position;
• and
• a seat base supported on the frame and comprising a platform movable between an extended position, whereat the platform is disposed inside the seat ring, and a retracted position, whereat the platform is withdrawn from the seat ring;
• wherein the seat is selectively positionable to permit support of the child in standing, sitting, and reclining positions.

A stroller for transporting a child selectively in a standing, seated, and reclined position, comprising:

• a frame including at least two base rails interconnected by a cylindrical hub, a spine connected to the cylindrical hub by a concentric cylindrical sleeve disposed thereabout and extending therefrom, and a bracing linkage rotatably attached to the base rails and releasably disposable against the spine in supporting relation thereto;
• a plurality of wheels attached to the frame;
• a basket for supporting the child, the basket being attachable to and supported on the spine and the bracing linkage, and having a confinement ring for confining the child;
• a seat ring comprising upper and lower connected concentric arcs having different radii supported in upper and lower tracks on the basket;
• a seat back supported on the lower arc, the seat back being reclinable at least when the seat ring is in the center-forward position;
• and
• a seat base supported on the frame and comprising a platform movable between an extended position, whereat the platform is disposed inside the seat ring, and a retracted position, whereat the platform is withdrawn from the seat ring.