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. 07, 2004
Filed:
Oct. 25, 2002
Applicant:
Inventors:
David Lee Steinlage, Dallas Center, IA (US);
Brian Thomas Mosdal, Ankeny, IA (US);
James Thomas Noonan, Bondurant, IA (US);
Garrett Lee Goins, Ankeny, IA (US);
Anthony Scott Royer, Adel, IA (US);
David Alan Payne, Urbandale, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B 9/10 ;
U.S. Cl.
CPC ...
F15B 9/10 ;
Abstract
A depth control system particularly useful for single point depth control on an agricultural implement includes a valve and actuator mounted directly to the pivotal connection areas of a hydraulic cylinder that controls height. Cylinder motion directly controls valve actuation independently of complicated linkages to reduce the size and cost of the system and substantially overcome hysteresis problems.