Patent ID: 8789843
Filing Date: 2014-07-29
Classification: B62B

Abstract:
1. A collapsible support frame for an infant pushchair, the support frame having a width and comprising at least an elongate spine located substantially centrally with respect to the width of the support frame, the width of the support frame being substantially transverse to the elongate spine, and a seating cavity within the support frame in which to receive a seat, the elongate spine being coupled at or towards one end of the elongate spine to a coupler and at or towards the other end of the elongate spine to a handle assembly, characterized in that, the spine comprises at least first and second, elongate, rigid spine members mutually interconnected at a pivot defining a moveable spine joint lying part-way along the length of at least one rigid spine member and, on at least one side of the moveable spine joint, subsidiary spine members each pivotably connected to one of the rigid spine members, the subsidiary spine members being pivotably secured together remote of the movable spine joint such that the spine defines at least one closed loop kinematic linkage being moveable between an erect configuration in which the rigid spine members and subsidiary spine members diverge and a collapsed configuration in which the rigid spine members and subsidiary spine members generally lie adjacent one another along their lengths, the connections of the rigid spine members and subsidiary spine members being such that the closed loop kinematic linkage is uniplanar, wherein the first and second rigid spine members are curved such that, in the erect configuration of the spine, the pivotal interconnection defining the moveable spine joint is an over centre pivot and locks the spine in its erect configuration.