Patent ID: 6145287
Filing Date: 2000-11-14
Classification: F15B,F16H

Abstract:
A crop harvesting machine having first and second hydraulic drive mechanisms to propel the machine, and to operate crop harvesting components, respectively, comprising:said machine including first and second closed circuit variable fluid displacement pumps, a hydraulic propel motor, and a hydraulic harvesting motor,first and second flow control valves interposed in a hydraulic circuit containing said pumps and said motors and capable of controlling fluid flow from said pumps to said motors,said valves being movable between open and closed positions so that said pumps can both supply hydraulic fluid to only said propel motor when said machine is only in a propel mode, and so that when machine is in both a propel mode and a harvesting mode, only said first valve can supply hydraulic fluid to said propel motor and only said second motor can supply fluid to said harvesting valve.