| 主权项 |
1. A controlled frictional release device for a nestable shopping cart, comprising:
an elongated substrate adapted for mounting the device to a lateral side of the nestable shopping cart; an inclined first surface on a first side of the substrate, the first surface having a positive gradient in a forward direction of cart travel to prevent excessive ingress of the nestable cart into a docked position with respect to a first docking cart; and a declined second surface located adjacent and aligned with the first surface on the substrate having a negative gradient with respect thereto, so as to provide a substitutable inclined surface for the first surface in the event the first surface receives excessive wear and becomes a worn surface, such that the substrate can be demounted, rotated through 180 degrees and remounted on the nestable cart to effectively replace the worn surface, whereby a controlled frictional release force is generally provided between the nestable cart and the first docking cart, wherein the first and second surfaces are discrete structures attached to the substrate. |
