Patent ID: 7543434
Filing Date: 2009-06-09
Classification: A01D

Abstract:
1. A method for torque management for a controlled gap thin blade shear process to cut grass on a cutting field using a low energy sickle mower, comprising: [1] Guidingly supporting a cutting blade (V) with a stator (S) formed, sized and positioned such that said cutting blade can shearingly pass said stator by means of sliding contact therewith while maintaining forcibly a controlled gap between 1 and 10 mils therebetween; [2] Moving said cutting blade forward across said stator with said cutting blade so guidingly supported so as to induce shear failure of said grass at a stator element (SE, [3] Monitoring a motor load for a motor driving said cutting blade to move forward; [4] Reversing said cutting blade upon encountering one of a rapid torque rise (TR) or an exceeding of a torque threshold (TC) for said motor load.