Patent ID: 8678404
Filing Date: 2014-03-25
Classification: B60B,B62B,Y10T

Abstract:
1. A stroller chassis comprising: a frame and at least one wheel resting on the ground, which are connected to each other by a mechanical hinge assembly defining a pivoting axis, which extends perpendicularly to the wheel rolling axis on the ground and around which the frame and the wheel pivot with respect to one another, at least one bearing for guiding the frame and the wheel in free rotation around said pivoting axis with respect to each other, two plates, each including an annular body, which is centered substantially with respect to the pivoting axis and which is arranged externally around the at least one bearing, said two annular bodies being connected rotatably around the pivoting axis to the frame and to the wheel respectively, and defining respective substantially planar surfaces on one of the axial end surfaces thereof, said planar surfaces being mutually adjoining along an adjoining plane, which is transverse to the pivoting axis, and cooperating with one another by means of sliding and frictional contact, and resilient means for pressing the respective annular bodies of the plates against each other and thus maintaining the planar surfaces applied against each other in the direction of the pivoting axis.