Patent ID: 8205907

Claim:
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.