Abstract: A stroller chassis includes a frame and a wheel that are connected to each other by a hinge defining a pivoting axis extending perpendicularly to the wheel's axis. The chassis can also include a bearing for guiding the frame and the wheel in free rotation about the axis. The chassis can include two plates, each including an annular body substantially centered with respect to the pivoting axis and arranged externally around the bearing. The two annular bodies are connected rotatably about the pivoting axis to the frame and the wheel and define substantially planar surfaces on the plate surfaces, the planar surfaces being mutually adjoining along a plane that is transverse to the pivoting axis. The plates cooperate with one another through sliding and frictional contact. The Chassis can also include resilient member for pressing the annular bodies against each other to maintain contact between the planar surfaces.

Abstract: A brake system for a stroller including at least first and second rear legs, each fitted with a wheel, is disclosed. The brake system includes a first and a second blocking element, slidably mounted respectively on the first and the second legs, between a blocking position and a disengaged position. An operating element, moveable from a high to a low position is employed for displacing the first blocking element from its disengaged position to its blocking position, and conversely, moveable from its low position to its high position for displacing the first blocking element from its blocking position to its disengaged position. A rotating shaft and movement transmission organs cause the second blocking element to move to its blocking position when the first blocking element does the same, and also cause the second blocking element to move to its disengaged position when the first blocking element does the same.

Abstract: This stroller chassis comprises a frame (10) and at least one wheel (20) resting on the ground, which are connected to each other by a mechanical hinge assembly (40) defining a pivoting axis (Z40-Z40), which extends perpendicularly to the wheel rolling axis on the ground (Y20-Y20) and about which pivoting axis the frame and the wheel pivot with respect to each other, and also comprising at least one bearing (42) for guiding the frame and the wheel in free rotation about said axis with respect to each other.