US 7,481,051 B2
Tree feller power management
Ulf Bergquist, Woodstock (Canada)
Assigned to Timberjack Inc., Woodstock, Ontario (Canada)
Filed on Apr. 07, 2005, as Appl. No. 11/100,675.
Claims priority of provisional application 60/560494, filed on Apr. 08, 2004.
Prior Publication US 2005/0226738 A1, Oct. 13, 2005
Int. Cl. F16H 61/40 (2006.01); A01G 23/00 (2006.01)
U.S. Cl. 60—422  [60/428; 60/465; 144/4.1; 144/34.1] 16 Claims
OG exemplary drawing
 
1. In a tree felling machine having an operator cab and a hydraulic system that has at least two hydraulic pumps operated by the same prime mover, said two pumps including a pump for driving a cutting element of the machine and the other pump being a main pump for providing fluid under pressure to operate other functions of the machine, the improvement wherein the machine has a control in the operator cab that is adjustable by the operator, apart from any manually adjustable pump displacement controls operable by the operator, so as to place an upper limit on the amount of power the saw pump can draw from the prime mover while reserving any remaining power for operation of the other functions.