Daniel Cormier,Francois R. Talbot,Keith A. Johnson,Neal J. Stoffel
申请号：
US13887488
公开号：
US20130240331A1
申请日:
2013.05.06
申请国别(地区):
US
年份:
2013
代理人:
摘要：
A crop harvesting header with a cutter bar and a draper assembly has a draper canvas driven by a drive roller with a cylindrical roller body having an outer surface surrounding an axis of rotation of the roller for engaging an inner drive surface of a canvas wrapped therearound. The roller has a plurality of ribs arranged on the outer surface of the roller body extending along a part of the body in an axial direction and angularly spaced around the outer surface. The ribs have a height less than 6 mm and a width less than 6 mm arranged such that the ribs do not engage into any recesses in the drive surface of the canvas.
