The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2008
Filed:
Mar. 29, 2006
Carl Steven Silbernagel, Fort Mill, SC (US);
Carl Steven Silbernagel, Fort Mill, SC (US);
Deere & Company, Moline, IL (US);
Abstract
A control system for a cutting reel unit includes a height-of-cut adjusting system and a reel-to-bedknife clearance adjusting system. The height-of-cut adjusting system includes a first frame; a second frame; a cutting reel supported by the second frame; a bedknife arranged adjacent to the cutting reel and supported by the second frame; at least one support element arranged to translate along the ground and arranged to support the first frame; and at least one first actuator connected between the first frame and the second frame and arranged to adjust the relative elevation of the second frame with respect to the first frame. The reel-to-bedknife clearance adjusting system includes at least one second actuator operatively connected between the reel and the second frame and a sound detector. An adaptive threshold technique may be used for detecting reel-to-bedknife contact during a pre-adjustment analysis. The adaptive threshold technique may include sampling each detector and analyzing the detector signal, setting detection threshold levels based on the average, maximum and minimum levels in the absence of reel-to-bedknife contact, and detecting contact between the reel and bedknife by determining if the detector signal is outside a detection threshold window.