Compact foldable stroller

Abstract

A juvenile stroller includes a mobile base and a juvenile seat mounted on the mobile base. The mobile base includes wheels and a foldable frame carrying the juvenile seat.

1 . A compact collapsible stroller comprising
 a mobile base and   a juvenile seat coupled to the mobile base,   wherein the mobile base includes a cart and a cam-driven foldable frame mounted for folding and unfolding movement on the cart and configured to include a cart pusher, a rolling cart stabilizer, and a first cam-fold unit coupled to the cart and to each of the cart pusher and the rolling cart stabilizer,   and wherein the first cam-fold unit includes a cam-support base formed to include a pin-receiver slot and a follower axle, an inverse cam including a follower coupled to the rolling cart stabilizer to move therewith and mounted on the follower axle to pivot about a pivot axis established by the follower axle and a motion-transfer pin arranged to extend into and slide back and forth in the pin-receiver slot formed in the cam-support base and in a motion-transfer slot formed in the follower, and a pin mover coupled to the cart pusher to move therewith and configured to provide pin-oscillator means for moving the motion-transfer pin in a first direction in the pin-receiver slot formed in the cam-support base and simultaneously in the motion transfer slot formed in the follower to apply a pivot-inducing force to the follower to cause the follower and the rolling cart stabilizer coupled to the follower to pivot about the pivot axis in a counterclockwise direction toward the cart to assume a folded front position alongside a front portion of the cart in response to movement of the cart pusher about the pivot axis in a clockwise direction toward the cart so that the stroller is converted from an expanded use mode to a compact collapsed storage mode and for alternatively moving the motion-transfer pin in a second direction opposite to the first direction in the pin-receiver slot formed in the cam-support base and simultaneously in the motion transfer slot formed in the follower to cause the follower and rolling cart stabilizer coupled to the follower to pivot about the pivot axis in a clockwise direction away from the cart to assume an unfolded front position extending in a forward direction away from the cart in response to movement of the cart pusher about the pivot axis in a counterclockwise direction away from the cart so that the stroller is converted from the compact collapsed storage mode to the expanded use mode.