Patent ID: 6149169
Filing Date: 2000-11-21
Classification: A61G,B60B,B60G

Abstract:
A swiveling wheel suspension system for a transport device comprisingan upper member mounted to said transport device,said upper member rotatable upon said transport device about a substantially vertical axis,a lower member pivotally mounted to said upper member and having a downwardly extending pair of fork elements thereon,a wheel mounted between said fork elements,said lower member pivotable upon said upper member about a horizontally disposed pivot axle,said pivot axle spaced apart laterally from said vertical axis in a first direction,an elastomeric member disposed between said upper member and said lower member,means to retain said elastomeric member between said upper member and said lower member,said wheel having a central axis,said central axis of said wheel spaced apart from said vertical axis in a lateral direction opposed to said first direction,stop means provided on at least one of said upper member and said lower member to limit the range of motion of said lower member about said pivot axle,said stop means comprising an outwardly extending shelf on at least one of said upper member and said lower member and an opposing bearing surface on said other of said upper member and said lower member,said bearing surface abutting said shelf when said elastomeric member is substantially compressed.