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:
Jan. 28, 2014
Filed:
Jan. 06, 2011
Applicant:
Terrance A. Friggstad, Grasswood, CA;
Inventor:
Terrance A. Friggstad, Grasswood, CA;
Assignee:
CNH Canada, Ltd., Saskatoon, Saskatchewan, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system enables sectional control for an air seeding system of a farm implement by exposing a main header, or selected ports of the main header, to a purging air flow when product flow through the selected ports is stopped. A plenum of air is fluidly coupled to the main header and provides a purging air flow to any exit port of the main header that has been shut off from product flow. Valves are used to selectively flow couple the exit ports of the main header to the product flow and to the purging air flow.