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:
Sep. 19, 2017
Filed:
Jul. 13, 2015
Applicant:
Ag Leader Technology, Ames, IA (US);
Inventor:
Kurt Townsend, Ames, IA (US);
Assignee:
Ag Leader Technology, Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01B 63/10 (2006.01); A01B 61/04 (2006.01); F15B 1/04 (2006.01); G01L 19/12 (2006.01);
U.S. Cl.
CPC ...
A01B 61/046 (2013.01); F15B 1/04 (2013.01); G01L 19/12 (2013.01);
Abstract
A planter downforce system includes a plurality of hydraulic accumulators. Each of the plurality of hydraulic accumulators is operatively connected to a pressure line associated with a row unit of a planter. A pressure sensor is operatively connected to the pressure line. An orifice is operatively connected to the pressure line to limit flow of fluid within the pressure line to a hydraulic zero-pressure tank. A controller is operatively connected to the pressure sensor and configured to determine accumulator charge pressure of the accumulators.